Bob Toal is an avid collector of postcard postal history targeting the birth and development of US postcards from their early beginnings to present. This includes early pioneer and private mailing cards as well as view folders, bi and tri-fold postcards, jumbo postcards and anything unusual in the postcard realm.
Postcards of prisons were seldom used as change of address notices, but they do remind us that even in our modern day world, prisons are as necessary as they were centuries ago.