Ancestry.com $$ has a new collection of records at
https://www.ancestry.com/search/collections/baseballquestionnaires/
This collection is comprised of self-completed surveys of professional baseball players from 1945-2005. The forms may include such information as:
Full Name
Nicknames
Position
Self-reported Ancestry
Birthplace and Date
Residence
Height and Weight
Batting and Throwing Handedness
High School and Graduation Year
College Information
Sports Played in School
First Professional Club
Off-Season Occupation
Scout
Memories
Military Service Details
Family Details