Las Posadas marks 75th year Print Email Music teacher Marguerite Collier, far left, started Las Posadas at Carrillo to let students take pride in their heritage. December 17, 2011 12:00 am • COURTESY OF ANGELINA QUIROZ / 1966 Comments Join Discussion Related Stories Las Posadas marks 75th year More K-12 stories Sunnyside's Isquierdo files Ch. 7 bankruptcy Education notes Scouts battle graffiti with South Tucson mural Allsport Academy's charter revoked after ADOE failing grade