I have a John Gould Superb Parrot print that has John Gould written on the front with the initials SZL in a circle underneath the name. The print is in a gold and white frame, and on the back paper there is a stamp that says Borin Art Products, Chicago 8, Ill. There is also a number written in pencil on the back. Can you give me any information on it?

There's a whole bunch of threads concerning SZL and the Paris Etching Society.
Unfortunately they aren't worth a great deal, a few hundred at most.