"Free Vaccination For New York's Millions. How the virus is prepared in the finest laboratory in the world for use by the health department's doctors."Hansen, Bert, 1944-1901 January 5engFrank Leslie's Illustrated Newspaper (92:2365), pages 10, 12. Text and photographs showing capillary tubes in health department laboratory, men getting vaccinated, calf pen and removal of pulp from calf. Hansen database #2699.