Older Bulletins from the American Peony Society (APS) can be read here. Except for a few missing issues all are available up through 2005. For current APS Bulletins and other benefits please consider membership in the APS.
Paeonia was an international newsletter for peony hybridizers and can be read here. It was published quarterly from April 1970 to spring 2002.
This one shows the seedlings grown at Adelman’s