A public blood drive will be held from 8:30 a.m. to 1:30 p.m. on Thursday, Sept. 18, in the lobby of Muñoz Gym on the Holbrook High School campus, located at 855 Eighth Ave. Did you know that nearly 500 donors of all blood types are needed every day in Arizona, but Type-O is always in greatest demand? September blood donors will help replenish blood supplies following the Labor Day holiday, a time when blood donations decline by as much as 25 percent. For a blood donation appointment, call 1-877-UBS-HERO (827-4376) go online to www.BloodHero.com, then enter your city or zip code.