When: Sat., April 21 and Wed., April 25 2012
William Ascarza discusses and signs his book Southeastern Arizona Mining Towns at noon and 2 p.m., Saturday, April 21. Gerry Taylor presents "Arizona-Sonora Desert Museum: Past, Present and Future" at noon and 2 p.m., Wednesday, April 25. Lectures are free, but reservations are required; call between 9:30 a.m. and 5 p.m., Monday through Friday; or from 10 a.m. to 5 p.m., Saturday. Visit wnpa.org for directions or more information.