Ford’s Theatre Society announced the spring and sum­mer 2010 sched­ule for its pop­u­lar History on Foot walk­ing tours, which are guided by actors play­ing char­ac­ters from Civil War Washington. The tours begin out­side of the his­toric Ford’s Theatre (511 10th Street NW) and con­tinue through down­town Washington, D.C. Beginning March 24, 2010, Ford’s will offer the assas­si­na­tion con­spir­acy walk­ing tour “Investigation: Detective McDevitt,” includ­ing two tours on April 15, the anniver­sary of Lincoln’s assas­si­na­tion. The pop­u­lar “A Free Black Woman: Elizabeth Keckly” tour will begin April 3, 2010, and con­tinue through August.