Susan Toomey Frost, whose lifetime passion is collecting, is the leading authority on "San José" decorative tiles and pottery. She is the author of the award-winning book Colors on Clay: The San José Tile Workshops of San Antonio. Frost also collects photographs and postcards of Mexico and Guatemala. She has also published a second book through University of Texas Press entitled Timeless Mexico: The Photographs of Hugo Brehme, a book about a German photographer in Mexico.
Frost has taught English and linguistics at three universities in Texas and Mexico. She gives frequent lectures and curates or lends to exhibitions in her collecting fields. Her articles and photographs have appeared in publications in the United States, Mexico, and Germany. She has appeared on three national television networks as a "Super Collector." Her user ID on eBay is benignobsession.