1954 field trials of polio vaccine in 48 US states

Sign indicates Dr. Jonas Salk's virus research lab at the University of Pittsburgh / MS Salk nods, speaks / 2-shot Salk examines document with another scientist in the research lab; rack of test tubes stands on table in front of them / [1/1/1954] Salk with Dr. Thomas Francis, Jr., of the University of MI and Basil O'Connor of the American Red Cross at press conference held to announce field trials of a polio vaccine / MS Salk at presser / CU hands insert syringe into bottle / Salk and nurses with little boy; nurse hands Salk a syringe / CU Salk as he bends over boy's arm / Salk's hand holds boy's arm as other hand pulls needle away; boy is unperturbed / WS line of schoolchildren in classroom with desks in foreground and woman, presumably teacher, in background / nurse with little boy as doctor releases him after giving him a shot; line of children waiting for shots in background / little African American girl winces, covers her eyes as doctor removes needle from her arm; she smiles and doctor smiles as he guides her away / CU armband "Polio Vaccine Volunteer" over sleeve on arm / hands inject vaccine into girl's arm as volunteer holds girl in place; girl looks at camera as syringe leaves her arm