Sc. 4882-91 Songbirds — all 10 stamps in two rows of 5 on a 5½”x8½” Dragon Card reproducing
an Audubon print of birds on a tree. Two First Day of Sale pictorial
postmarks tie the stamps: One from Audubon, PA and the other from
neighboring Oaks, PA, where the PNSE show had a FDOS ceremony. Great
for a birds-on-stamps collection!