Sex Offenses: Is It Legal to Make a Photo Book on Vintage Bestiality for Historical Purposes

My question involves criminal law for the state of: Entire USA

I had the opportunity to buy a small collection of vintage bestiality pornography from the 1930's to 1960's. If I acquire it, I would be interested in making a limited edition artist book of the collection to distribute as a donation to special collection libraries. I tried to look it up on Google but found no firm answers. It looks like laws vary state to state. Do you think it would be legal to make a photo book on vintage bestiality for historical or scholarly purposes?

Thanks

Sex Offenses: Is It Legal to Make a Photo Book on Vintage Bestiality for Historical Purposes