"During the entire month of February 2010, individuals can pick up a FREE Museum Month Pass at Macy’s to receive half-off admission at 39 San Diego County museums all month long. Guests with a pass may bring up to three people with them to any participating museum to receive half-off, too."
I called and checked and our Macy's down in Temecula has them. Just go to any register and pick one up.
Here is a list of all the participating Museums:
Adobe Chapel Museum, Barona Cultural Center & Museum, Birch Aquarium at Scripps, Bonita Museum & Cultural Center, California Center for the Arts Escondido Museum (Feb 13-28), Coronado Museum of History & Art, Flying Leathernecks Aviation Museum, Heritage of the Americas Museum, La Jolla Historical Society, LUX Art Institute, Maritime Museum of San Diego, Marston House, MCRD Command Museum, Mingei International Museum, Mingei International Museum North County, and Museum of Contemporary Art San Diego-Downtown and MCASD-La Jolla (Feb. 21-28).
Others participating in the Museum Month program include the Museum of Making Music, Museum of Photographic Arts, Oceanside Museum of Art, Old Town San Diego Historic Park, Reuben H. Fleet Science Center, San Diego Air & Space Museum, San Diego Archaeological Center, San Diego Automotive Museum, San Diego Botanical Gardens, San Diego Hall of Champions Sports Museum, San Diego Historical Society Museum & Research Archives, San Diego Model Railroad Museum, San Diego Museum of Art, San Diego Museum of Man, San Diego Natural History Museum, Tijuana Estuary Visitors Center, Timken Museum of Art, USS Midway Museum, Veteran's Museum & Memorial Center, Water Conservation Garden, Whaley House Museum and the Women’s History Museum and Education Center.