- Page http://antiqueslots.com/
- Buys, sells, and repairs mechanical slot machines, electromechanical pinball machines, trade stimulators, old penny arcade games, and most anything that is coin operated.
- Coin Operated Collectors Association
- Page http://www.coinopclub.org/
- COCA is a club for collectors of antique (pre-1951) coin operated slot machines,trade stimulators, arcade machines, vending machines and related collectibles.