Help w/Signature on Engraved Art Print

hi everyone. i found this today and thought i could figure out who the artist is with Davenports. on the back side of the frame there was a very small fragment of an old sticker that i assume was the framers name. the only thing discernible was the word "Los" and a little bit of an "A." so i'm assuming it was framed in Los Angeles. Also, the sticker as well as the font did look a bit older, possibly 50s or earlier. i've already removed it from the frame, and there's nothing else written on the print. i'm hoping someone might recognize the signature. the print itself measures 9 5/8" x 3 5/8". i'm assuming the "TP" means trial proof.