Atari 2600 Image Archive. This archive contains images showing the different styles of carts, labels and boxes that each company made so the descriptions in my label variations list will be more meaningful.
Luc Pycke's list of 2600 Games and Prototypes Made By Atari V3.0 Lots of good info about rare 2600 cartridges that Atari made. Also lists all games Atari made sorted by VGR's rarity.
How durable are those old Atari cartridges?
Here's some inspiration to get out there and go cartridge hunting!
Cartridges I own This is a list of 2600 cartridges that I have in my collection. Last updated December 28, 1995.
Sale/Trade List This is my most recent list of classic video games that I have forsale or trade. Many video game systems are covered in this list.
Wish List This is a list of 2600 cartridges that I'm still looking for.