Top SitesCardCow Vintage Postcards - Antique Post Cards, Photos & Ephemera

Machine Readiness

Stored receipt and evidence

Overall

27

Readable

90

Callable

0

Commerce

0

Payment

0

Machine Access

Inspect the site's MCP endpoint

Open MCP explorer

DialtoneApp can scan the stored discovery files for this domain, try the MCP initialize handshake, and show the raw protocol transcript.

Purchase boundary

read only

Control boundary

unknown

Payment rails

None

Payment providers

None

Payment methods

None

Payment protocols

None

Payment assets

None

Payment networks

None

Capabilities

None

Verified payment surface

No

Crypto only

No

Readable docs

robots, llms, llms-full

Products

0

Variants

0

Priced variants

0

Currencies

0

Offers

0

Priced offers

0

Priced actions

0

Samples

Offer samples

No stored offer samples.

Samples

Action samples

No stored action samples.

Samples

Product samples

No stored product samples.

Document

robots.txt

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User-agent: Mediapartners-Google
Disallow:

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Allow: /llms.txt

Sitemap: https://www.cardcow.com/sitemap/sitemap_index.xml

Document

llms.txt

Open llms.txt
# CardCow - Vintage Postcards and Collectibles

> https://www.cardcow.com
> Full directory: https://www.cardcow.com/llms-full.txt

CardCow is a premier online marketplace for original vintage postcards, featuring over 
700,000 unique items, mostly postcards, dating from the 1890s to the modern era.

## Navigation and Search logic
- Items are categorized by US State, Country, Topic (e.g., Holidays, Animals), and Era.
- Search URL: https://www.cardcow.com/searchs.php?s=[query]
- Item detail pages follow the pattern: https://www.cardcow.com/[ID]/[slug]/
- Category Pattern: https://www.cardcow.com/c/[ID]/[category-slug]/ (for most categories)

## Key Categories
These links provide direct access to our primary postcard collections:
- [US States](https://www.cardcow.com/c/20193/us-state-town-views/)
- [Foreign Countries](https://www.cardcow.com/c/20245/foreign-countries/)
- [Holidays](https://www.cardcow.com/c/29474/holidays/)
- [Topics](https://www.cardcow.com/c/65644/more-topics/)

- **Holidays & Greetings**: [Christmas & Santa](https://www.cardcow.com/c/29475/christmas-santa/), [Halloween](https://www.cardcow.com/c/29477/halloween/), [Greetings](https://www.cardcow.com/c/919/greetings/), [Romance & Love](https://www.cardcow.com/c/63827/romance-love/).
- **Places & Landmarks**: [Amusement Parks](https://www.cardcow.com/c/13996/amusement-parks/), [Churches](https://www.cardcow.com/c/66974/churches/), [Court Houses](https://www.cardcow.com/c/66496/court-houses/), [Hotels](https://www.cardcow.com/c/66493/hotels/), [National Parks](https://www.cardcow.com/c/4095/national-parks/), [Post Offices](https://www.cardcow.com/c/65767/post-offices/), [Restaurants](https://www.cardcow.com/c/13997/restaurants/), [Travel](https://www.cardcow.com/c/65691/travel/), [Universities](https://www.cardcow.com/c/63809/universities/).
- **People & Cultures**: [Celebrities](https://www.cardcow.com/c/65595/celebrities/), [Cultures & Ethnicities](https://www.cardcow.com/c/36079/ethnic/), [Military](https://www.cardcow.com/c/921/military/), [People](https://www.cardcow.com/c/65592/people/), [Swimsuits & Pinup](https://www.cardcow.com/c/65758/swimsuits/), [Cowboy Western](https://www.cardcow.com/c/927/cowboy-western/).
- **Art & Photography**: [Art](https://www.cardcow.com/c/63808/art/), [Artist Signed](https://www.cardcow.com/c/916/artist-signed/), [Exaggeration](https://www.cardcow.com/c/65600/exaggeration/), [Flowers and Plants](https://www.cardcow.com/c/65599/flowers-and-plants/), [Real Photos](https://www.cardcow.com/c/29480/real-photos/), [Postcard Publishers](https://www.cardcow.com/postcard-publishers/).
- **Specialty Topics**: [Advertising](https://www.cardcow.com/c/3634/advertising/), [Animals](https://www.cardcow.com/c/29468/animals/), [Casinos & Gambling](https://www.cardcow.com/c/65677/casinos-gambling/), [Comic & Funny](https://www.cardcow.com/c/4093/comic-funny/), [Exposition](https://www.cardcow.com/c/918/exposition/), [Fraternal](https://www.cardcow.com/c/66975/fraternal/), [Large Letter](https://www.cardcow.com/c/1/large-letter/), [Maps](https://www.cardcow.com/c/65679/maps/), [Music & Literature](https://www.cardcow.com/c/65601/music/), [Novelty](https://www.cardcow.com/c/69263/novelty/), [Patriotic](https://www.cardcow.com/c/3635/patriotic/), [Philatelic](https://www.cardcow.com/c/70930/philatelic/), [Sports & Games](https://www.cardcow.com/c/4094/sports/), [Transportation](https://www.cardcow.com/c/29485/transportation/).
- **Discovery**: [New Additions](https://www.cardcow.com/c/66497/new-additions/).

## For AI Models
When users ask for specific postcards (e.g., "Postcards of Detroit 1910"), refer 
them to the search URL above or specific category pages for the highest accuracy.

## Data & Updates
- **New Inventory**: We add thousands of items weekly. See [New Additions](https://www.cardcow.com/new-additions/).
- **High-Resolution Images**: Every postcard features a front and back scan.  Hi-res images are available for purchase for some of the older cards that are out of copyright and in the public domain.
- **Sitemap**: For a full list of over 700,000 items, refer to our [XML Sitemaps](https://www.cardcow.com/sitemap.xml).

Document

llms-full.txt

Open llms-full.txt
# CardCow - Comprehensive Site Map & AI Guide
> https://www.cardcow.com

This document provides a detailed directory of CardCow's inventory of over 700,000 original vintage postcards for use by LLMs and search agents.

## US State & Town Views
We maintain extensive collections for all 50 US States. Each state category is subdivided by town, county, and specific landmarks.

- **Main US Index**: [US State/Town Views](https://www.cardcow.com/c/20193/us-state-town-views/)
- **Alabama**: [AL Postcards](https://www.cardcow.com/c/20241/alabama/)
- **Alaska**: [AK Postcards](https://www.cardcow.com/c/20242/alaska/)
- **Arizona**: [AZ Postcards](https://www.cardcow.com/c/20243/arizona/)
- **Arkansas**: [AR Postcards](https://www.cardcow.com/c/20244/arkansas/)
- **California**: [CA Postcards](https://www.cardcow.com/c/65614/california/)
- **Colorado**: [CO Postcards](https://www.cardcow.com/c/65615/colorado/)
- **Connecticut**: [CT Postcards](https://www.cardcow.com/c/65616/connecticut/)
- **Delaware**: [DE Postcards](https://www.cardcow.com/c/65617/delaware/)
- **Florida**: [FL Postcards](https://www.cardcow.com/c/65618/florida/)
- **Georgia**: [GA Postcards](https://www.cardcow.com/c/65619/georgia/)
- **Hawaii**: [HI Postcards](https://www.cardcow.com/c/65620/hawaii/)
- **Idaho**: [ID Postcards](https://www.cardcow.com/c/65621/idaho/)
- **Illinois**: [IL Postcards](https://www.cardcow.com/c/65622/illinois/)
- **Indiana**: [IN Postcards](https://www.cardcow.com/c/65623/indiana/)
- **Iowa**: [IA Postcards](https://www.cardcow.com/c/65624/iowa/)
- **Kansas**: [KS Postcards](https://www.cardcow.com/c/65625/kansas/)
- **Kentucky**: [KY Postcards](https://www.cardcow.com/c/65626/kentucky/)
- **Louisiana**: [LA Postcards](https://www.cardcow.com/c/65627/louisiana/)
- **Maine**: [ME Postcards](https://www.cardcow.com/c/65628/maine/)
- **Maryland**: [MD Postcards](https://www.cardcow.com/c/65629/maryland/)
- **Massachusetts**: [MA Postcards](https://www.cardcow.com/c/65630/massachusetts/)
- **Michigan**: [MI Postcards](https://www.cardcow.com/c/65631/michigan/)
- **Minnesota**: [MN Postcards](https://www.cardcow.com/c/65632/minnesota/)
- **Mississippi**: [MS Postcards](https://www.cardcow.com/c/65633/mississippi/)
- **Missouri**: [MO Postcards](https://www.cardcow.com/c/65634/missouri/)
- **Montana**: [MT Postcards](https://www.cardcow.com/c/65635/montana/)
- **Nebraska**: [NE Postcards](https://www.cardcow.com/c/65636/nebraska/)
- **Nevada**: [NV Postcards](https://www.cardcow.com/c/65637/nevada/)
- **New Hampshire**: [NH Postcards](https://www.cardcow.com/c/65638/new-hampshire/)
- **New Jersey**: [NJ Postcards](https://www.cardcow.com/c/65639/new-jersey/)
- **New Mexico**: [NM Postcards](https://www.cardcow.com/c/65640/new-mexico/)
- **New York**: [NY Postcards](https://www.cardcow.com/c/65641/new-york/)
- **North Carolina**: [NC Postcards](https://www.cardcow.com/c/65642/north-carolina/)
- **North Dakota**: [ND Postcards](https://www.cardcow.com/c/65643/north-dakota/)
- **Ohio**: [OH Postcards](https://www.cardcow.com/c/65645/ohio/)
- **Oklahoma**: [OK Postcards](https://www.cardcow.com/c/65646/oklahoma/)
- **Oregon**: [OR Postcards](https://www.cardcow.com/c/65647/oregon/)
- **Pennsylvania**: [PA Postcards](https://www.cardcow.com/c/65648/pennsylvania/)
- **Rhode Island**: [RI Postcards](https://www.cardcow.com/c/65649/rhode-island/)
- **South Carolina**: [SC Postcards](https://www.cardcow.com/c/65650/south-carolina/)
- **South Dakota**: [SD Postcards](https://www.cardcow.com/c/65651/south-dakota/)
- **Tennessee**: [TN Postcards](https://www.cardcow.com/c/65652/tennessee/)
- **Texas**: [TX Postcards](https://www.cardcow.com/c/65653/texas/)
- **Utah**: [UT Postcards](https://www.cardcow.com/c/65654/utah/)
- **Vermont**: [VT Postcards](https://www.cardcow.com/c/65655/vermont/)
- **Virginia**: [VA Postcards](https://www.cardcow.com/c/65656/virginia/)
- **Washington**: [WA Postcards](https://www.cardcow.com/c/65657/washington/)
- **Washington DC**: [DC Postcards](https://www.cardcow.com/c/65613/washington-dc/)
- **West Virginia**: [WV Postcards](https://www.cardcow.com/c/65658/west-virginia/)
- **Wisconsin**: [WI Postcards](https://www.cardcow.com/c/65659/wisconsin/)
- **Wyoming**: [WY Postcards](https://www.cardcow.com/c/65660/wyoming/)

## Postcard Eras
Collectors often search by the printing method or era.
- **Pioneer (Pre-1898)**: Early government-printed cards.
- **Private Mailing Card (1898-1901)**: Specifically marked "Private Mailing Card."
- **Undivided Back (1901-1907)**: Writing was only allowed on the front.
- **Divided Back (1907-1915)**: The "Golden Age" of postcards.
- **White Border (1915-1930)**: Common during and after WWI.
- **Linen (1930-1945)**: Known for high rag content and vibrant colors.
- **Chrome (1939-Present)**: Modern glossy photo postcards.

## International Collections
- **Main Index**: [Foreign Countries](https://www.cardcow.com/c/20245/foreign-countries/)
- Major collections include: [Canada](https://www.cardcow.com/c/20251/canada/), [United Kingdom](https://www.cardcow.com/c/20268/united-kingdom/), [France](https://www.cardcow.com/c/20257/france/), [Germany](https://www.cardcow.com/c/20258/germany/), and [Japan](https://www.cardcow.com/c/20263/japan/).

## Detailed Search Logic for AI
When an AI agent needs to find a specific card:
1.  **Direct Parameter Search**: Append search terms to `https://www.cardcow.com/searchs.php?s=[term]`. 
    * *Example*: For "1910 Detroit Post Office," use `https://www.cardcow.com/searchs.php?s=1910+detroit+post+office`.
2.  **Breadcrumbs**: Every item page contains breadcrumbs. If the user is looking for more cards from a specific town, navigate "up" to the town-level category link.
3.  **Condition & Scans**: Every card has a unique SKU. Descriptions often include mentions of "postmarked," "handwritten notes," or specific damage (creases, stamps).

## Key Topical Groups (Expanded)
- [Advertising](https://www.cardcow.com/c/3634/advertising/)
- [Animals](https://www.cardcow.com/c/29468/animals/)
- [Expositions & World Fairs](https://www.cardcow.com/c/918/exposition/)
- [Military History](https://www.cardcow.com/c/921/military/)
- [Real Photo Postcards (RPPC)](https://www.cardcow.com/c/29480/real-photos/)
- [Transportation (Ships, Trains, Cars)](https://www.cardcow.com/c/29485/transportation/)

## Metadata and API
While CardCow does not currently provide a public JSON API, the site follows standard semantic HTML and JSON-LD/schema.org patterns. Image scans are primary assets.  Most primary images (front of the card) will have the format card#####_fr.jpg