Tech is right..... in the last century, you had an Honest Charlie catalog or an Isky catalog, etc. For an engine, the number of cam grids was severely limited. Their catalog listing didnt give a lot of cam timing data, it simply said "race" or "3/4 race" or sometimes "short track" for the roundy guys. The buyers werent as scientific as today so you bought a cam. Slicks were similar, you didnt buy a compound, you simply bought slicks.

Somebody probably has an old catalog laying around....Honest Charlie catalog would be fun to see!