You can find a list at your local library. You could also call customer service or information for the major leagues and ask them.
http://www.footballdb.com/teams/philadelphia-eagles/roster/1991
Try the baseballcube.com
espn.com, or sportshistory.com
Ask your great great grandpa.
where can you find the 1965 university of pennsylvania football roster
Look below at the related links for a link to the roster.
This information is for the US only: For Major League Players - There are 30 Major League teams each with a 40 man roster. 30 x 40 = 1200 Then, on average, each team has 6 farm teams in its system with a roster of 25 to 30 players. So 6 x 30 x 30 = 5400. So in the United States there are approximately 6600 professional baseball players in the MLB and MiLB. Now do you also want to count players in the Independant Leagues as professional baseball players? Also I know that there is a huge system in Japan, Central America and South America. No clue as to find out how many professional players are in those countries.
There like exactly the same
Click on the '2006 Fresno State Roster' link below to see the roster.
Click on the 'NFL Rosters from 1920' link on this page to see NFL roster data starting from the 1920 season.
Click on the '2008 Kentucky Football Roster' link below to see the roster of the 2008 Wildcats.
The 1968 Ohio State Buckeyes Roster