1918 — Diphtheria, CA — 213

— 213  CA Board of Health. “Diphtheria Must Be Controlled,” Weekly Bulletin, II/3, 3-3-1923.

Source

California State Board of Health. “Diphtheria Must Be Controlled,” Weekly Bulletin, Vol. II, No. 3, 3-3-1923, p. 1. Google digitized. Accessed 9-19-2016 at: https://books.google.com/books?id=7ow9AQAAIAAJ&printsec=frontcover#v=onepage&q&f=true