I was wondering what might be a good source for spring training rosters, actually looking for 1980's era. I know that some teams would publish a spring training guide with rosters. I am trying to ascertain what uniform numbers may have been assigned to various non-roster or invitees during their time in camp. I know yearbooks sometimes provide this information, but I didn't know of any other sources. I am researching a few older jerseys and am trying to see if any of these may have been worn in spring training only. I cannot find players or coaches who wore certain numbers, at least listed on 25 or 40 man rosters.

Thanks