About Us

The System Source Computer Museum (also known as the Computer Museum @ System Source or Maryland Technology Museum) in Hunt Valley, Maryland, is a standout destination for tech enthusiasts, historians, and anyone interested in computing history.

Founded from obsolete 1980s ComputerLand inventory by Bob Roswell (and Maury Weinstein), the museum reflects deep personal passion. Bob and knowledgeable docents/volunteers often lead tours, sharing stories and insights that bring the exhibits to life. Visitors frequently praise the guided tours as educational, nostalgic, and inspiring.

It houses over 5,000 artifacts spanning from ancient calculating tools (like abacuses, Napier’s Bones, Quipu, slide rules, and an Antikythera mechanism replica) to modern-era computers, supercomputers, and gaming consoles. Many items are operational or restored, allowing visitors to see (and sometimes interact with) history in action.

Rare early pieces: Authentic Apple I (one of the briefcase models), Xerox Alto, Kenbak-1, and various Apple systems (II, III, Lisa, etc.).

Big iron and supercomputers: Cray-1 (with the chance to step inside in some tours), Cray-2, Cray T90, UNIVAC systems, IBM System/360s, DEC PDP series (including LINC), Bendix G-15 (recently restored as one of the oldest working computers in North America).

Minicomputers, mainframes, and more: Burroughs, Data General, HP systems, core memory, delay-line memory, extensive storage evolution displays (tapes, floppies, massive hard drives), and mechanical/electromechanical calculators.
Gaming and personal computing: Broad range of consoles and home computers from the 1970s–1990s.

Sign up for a tour here!