1927 american association

https://paperofrecord.hypernet.ca/paper_view.asp?PaperId=834&RecordId=6&PageId=7777182&iDateSearchId={E1CD523B-868A-4DE4-830B-88F49E23BF2F}

SABR guide to the guides

file:///home/chronos/u-878005b62079bf70a6a2a35459d13acb3d2113c5/MyFiles/Downloads/SABR-Guide-to-Minor-League-Statistics-3rd-Edition-2007%20(1).pdf

1929 Spalding guide

https://www.loc.gov/resource/spalding.00171/?st=gallery

AA-p.178

1930 Spalding guide

https://www.loc.gov/resource/spalding.00172/?sp=192

AA-p. 192

Pearls before swine Krazy Kat comic strip

https://www.gocomics.com/pearlsbeforeswine/2008/08/22

MILB stuff

http://www.baseballguru.com/bunko/

https://books.google.com/books?id=oNVs03_8fEcC&pg=PA86&lpg=PA86&dq=1903+texas+league&source=bl&ots=ESNK0Jdbsp&sig=ACfU3U0SYrhq-UeA-6L8k0dK4AY3XDOyIg&hl=en&sa=X&ved=2ahUKEwjkmLXsu5DoAhVFXKwKHYqzBW04ChDoATASegQICRAB#v=onepage&q=1903%20texas%20league&f=false

read later

http://minorleaguesource.com/total.htm

https://books.google.com/books?id=gg1eCgAAQBAJ&pg=PA52&lpg=PA52&dq=torao+ooka+baseball&source=bl&ots=nVC8jNsw6d&sig=ACfU3U3wLZMSNyJsQFmt7mooCpvx8Qr3Pg&hl=en&sa=X&ved=2ahUKEwjnhcK6sJDoAhWjkq0KHWh0C7IQ6AEwBnoECAoQAQ#v=onepage&q=torao%20ooka%20baseball&f=false

Eskanazi collection

https://www.historylink.org/File/7074