I'm sure there were others but I think is was Ken Gordon computer fairs around where I lived. As I recall, they became less interesting over time as scavenging

I'm sure there were others but I think is was Ken Gordon computer fairs around where I lived. As I recall, they became less interesting over time as scavenging parts from used equipment became less of a thing and there were increasingly other sources for components, shareware/freeware, and so forth.