The Rider-Waite deck can be seen in this FTP site. The scans are courtesy of U.S. Games Inc, which holds the copyrights to the cards.
ftp://ftp.lysator.liu.se/pub/magick/Tarot/Riderwaite_jpg/
And a repainted Rider-Waite can be seen on this site.
World Web Playing Card Museum, displaying some or all of the cards from thousands of decks.
World Web Playing Cards Museum.
The Mystic Eye site carries picture from dozens of decks.
Flornoy's English site features the Jean Dodal & Jean Noblet decks, both photos of originals & restorations.
http://www.tarot-history.com/Jean-Dodal/index.html
http://www.tarot-history.com/Jean-Noblet/index.html
Muse o Dei Tarocchi.
A Tarot de Marseille deck can be seen in the following site.
John Ops's Pythagorean Tarot, an impressive deck, is available on the web (card images and extensive information).
Hajo Banzhaf's site has pointers to several decks.
At Aecletic site's tarot section. The site has an index of tarot decks, each with a short description, a sample of several of the cards, and a rating.
At the Art of Tarot site (Michele's Tarot Page). This is an outstanding tarot site, which has a playing card picture galley where samples of many cards, including tarot, can be seen.
Andy's Playing Cards site. Contains samples from many decks, including playing cards, tarot decks, and minchiate decks.
The English Playing Cards Society's web site.
The Tarocci site. Displays a pair of cards from over two hundrend decks.
Barry Magarick's antique playing card collection. Mr. Magarick's site shows his collection of cards, which includes some tarot cards.
Wicce's tarot collection. Contains reviews of decks as well as samples of cards from the reviewed decks.
Tom Tadfor Little's tarot history site. Contains lots of material about tarot history, as well as some cards.
This page shows 30 to 40 new cards every week. In the 'learning the tarot' Yahoo! group [http://groups.yahoo.com/] a single card (e.g. 10 of cups) is discussed and compared between different decks. 'Ashleythecat' uploads the images weekly to the site in order to save bandwidth on mailing the images.
http://www.freeyellow.com/members8/ashleythecat/index.html
The list has a web page at
Hans Logeskov's Tarot Inspiration page has an explanation of each and every card from the Thoth deck with scanned cards.
The Artist's Inner Vision Tarot.
Dave's Tarot Emporium.
Arnell Ando's Transformational Tarot.
The Victoria Regina Tarot.
Rev. Jennifer Elizabeth Moore's The Healing Tarot.
Shelly Corbett's Abyssal Tarot.
alt.gothic.fashion Tarot Project
The X Tarot Card Gallery
Jess Karlin's Tarot FAQs, http://jktarot.com/
The tarot spreads web site, http://www.TarotSpreads.com
Tom Tadfor Little's tarot page, http://www.telp.com/tarot/index.htm
Joan Bunning's Learning the Tarot - An On-Line Course, http://www.learntarot.com/
Builders of the Adytum, http://bota.org/
The Fraternity of Hidden Light's web site, http://www.lvx.org/Archive/index.html
The Church of Yahweh, http://www.yhwh.com/index2.htm
Nina Lee's Tarot for Self Discovery, http://www.geocities.com/Athens/Acropolis/2282/tarot/
James W. Revak's home page, http://www.crosswinds.net/~jrevak/
Ariadne's page, http://home.mindspring.com/~ariadne1/
The Two of Cups site and Queen of Pentacles sites.
http://www.twoofcups.com/
http://www.queenofpentacles.com/
An on-line version of the Book of Thoth, http://www.choronzon.com/brainwav/thoth/
Drafts of cards from the Thoth deck by Lady Frieda Harris can be seen on this site - http://www.occultartgallery.com/occultartgallery/harris/harris.html
An on-line version of the Pictorial Key to the Tarot, http://www.sacred-texts.com/tarot/index.htm
An on-line version of Mather's Book T, http://www.the-equinox.org/vol1/no8/eqi08016.html
An on-line version of Mather's The Tarot.
http://www.hermeticgoldendawn.org/Documents/Archives/Matherstarot.htm
http://www.tarot.org.il/Library/Mathers/The Tarot.pdf
An on-line version of Ouspensky's Symbolism of the Tarot, http://www.tarot.org.il/Library/Misc/Ouspenski.pdf
Golden Dawn sites
http://www.goldendawn.atfreeweb.com/
http://www.hermeticgoldendawn.org/
http://www.golden-dawn.org/
http://www.golden-dawn.com/
The symbols encyclopedia, http://www.symbols.com/
Byzant : Library of Esoteric Symbols, http://www.byzant.com/symbols/
The Free Reading Network - will give reading for free, http://www.freereading.net/
Numerology sites :
http://www.simplynumbers.com/
http://www.annexus.net/
Astrology sites :
http://www.astrology-numerology.com/
http://www.astrology.com/
Ditto (visual search engine) and AltaVista image search, http://www.ditto.com/
In the alt.tarot newsgroup, news:alt.tarot
In the TarotL mailing list, http://groups.yahoo.com/ (which carries many tarot related lists).
The Encyclopedia of Tarot, 3 volumes.
By Stuart R. Kaplan.
Published by U.S. Games Systems, Inc.
The Tarot : History, Mystery, and Lore.
By Cynthia Giles.
Published by Simon & Schuster.
Tarot Symbolism.
By Robert O'Neill
Published by Fairway
The Pictorial Key to the Tarot.
By Arthur Edward Waite & Pamela C. Smith (Illustrator)
The Rider-Waite deck, sold in three size - Giant (1.17x7.05x4.09 inches), Regular (1.22x4.89x2.94 inches), Pocket (2.25x3.5 inches), Miniature (0.98x3.61x2.32 inches), & Tiny (1.17x1.89x1.45 inches).
Book of Thoth.
By Aleister Crowley & Frieda Harris (Illustrator)
The Aleister Crowley Thoth deck :
Large - 1.26x5.72x3.89 inches - I've found that this deck is a bit large for the average person to shuffle easily and comfortly. The cards' hues are somewhat pale and lack life.
Small - 1.18x4.52x3.05 inches - I've found that this deck is comfortable and easy to shuffle, though it's somewhat smaller than the average tarot decks. It's colours are a lot livlier than the large Thoth deck.
U.S. Games Inc, http://www.usgamesinc.com/
Samuel Weiser Inc, http://www.weiserbooks.com/
The Tarot Garden, http://www.tarotgarden.com/
Alida, http://www.alidastore.com/
This San Marino site sells some decks I couldnt find elsewhere. The store now has secure ordering via SSL, so I highly recommend it. I've ordered a few decks, which were shipped to me in Israel - delivery was good, except for a small delay due to local customs (completely unrelated to the store).
Amazon
Barnes & Nobles, http://www.bn.com/
The eBay auctions site, http://www.ebay.com/