Tamsin by Peter S. Beagle 1 October 1999 by librarian 0 “Tamsin” by Peter S. Beagle. Title: Tamsin Author(s): Peter S. Beagle Cover Artist: Greg Call Language: English Original Publisher: Roc Originally Published: October 1999 Publisher: New American Library Published: May 2013 ISBN-10: 0451415221 ISBN-13: 9780451415226