[mr2686]

I was curious to see if anyone here had information on the sporting news record books, specifically from 1908 to 1941. I've noticed that they have some in green and some in red..sometimes in the same year. Is one harder to find than another? Is only one player pictured per year? Also, I saw one 1928 Gehrig that the seller said was a reproduction...is there any sure way to tell a reproduction from an original (copyright, etc)?.
Thanks for any help.