Help identifying

[zachclose21]

So I can't find out what these are
They are 4x5 so it rules out jay bulishing
They are a glossy white photo paper
I have 29 of them and they are all NY Yankees
Thanks for any help
http://i1098.photobucket.com/albums/g369/zachclose21/4A444432-0CAC-4E93-80F4-1ADBFC260CC4_zps829yoqv7.jpg
http://i1098.photobucket.com/albums/g369/zachclose21/439670A8-8F81-4EDA-8055-B11799490B8B_zps9dxefqzh.jpg
http://i1098.photobucket.com/albums/g369/zachclose21/1541DBA8-2850-423A-8B05-4F3DBA2D46CA_zpswhjx57cp.jpg

[moeson]

That's the 1974 Syracuse Chiefs team issue which combined Yankee minor league players, then current major league players and Yankee All Time Greats. There should be 30 cards in total.

[zachclose21]

Wow thanks I'm having a hard time locating a value on these
Anybody have an ideas what they are worth