Free online classified ads and job posting at Astanda.com
http://americanhistory.si.edu/csr/cadnnc.htm
NNC includes approximately one million objects--more than 400,000 coins and some 550,000 pieces of paper money and encompasses the entire history of money of the world, coins and paper money, as well as medals.
http://www.strongmuseum.org/NTHoF/NTHoF.html
Features articles on toy inductees from previous years and provides a form to nominates new toys.
http://www.old-computers.com
An on-line museum with photographs, articles, and a collectors club with a forum and chat.
http://www2.physics.umd.edu/~redish/Money/
A page about Physicists honored by having their picture on currency in many countries around the world.
Official page by the Bank of Russia, with images and descriptions of all legal tender banknotes.
http://www.swissmint.ch/e/
Official mint of Switzerland.
http://www.astrolabes.org/
The history and uses of the astrolabe, a very ancient astronomical computer for solving problems relating to time and the position of the Sun and stars in the sky.
http://www.trussel.com/f_books.htm
A large collection of information and links useful to book collectors.
http://www.vintage.org/
An international event that celebrates the history of computing.
http://en.wikipedia.org/wiki/Postcard
A history and glossary of terms for postcard collectors.
http://www.wildrepublic.com/
Interactive site for owners of Wild Republic stuffed animals. News, games, stories, and location of stores to purchase plush toys.
http://www.2-clicks-stamps.com
Everything about stamps. Stamp collectors pages, software, Auctions, Catalogues, Collectors group and stamp resources.