I'm passing along my lifetime collection of Indians memorabilia as my family, and particularly my grandsons, have no interest in it.  I've had these since the '70s and '80s, and through my own research of Google Images of these signatures, I have no reason to doubt their authenticity.  See for yourself from the pictures.  

Signatures include: Mgr. Garcia, Orta, Rosello, Stanton, Manning, Mora, Monge, Nossek. Hassey, Denny, Spillner, Hargrove, Dubinsky, Charbonneau, Diaz, Duncan, Waits, Garland, Alexander,

C Johnson, Kuiper, Barker, Sommers, Pruitt, Harrah, Owchinko, Veryzer, Paxton, Cruz (29 in all)

I am offering a few more so check my other auctions and save on postage.