1957 – Excessive natural heat (US Public Health Service code E931) — 280

–280 USPHS Vital Statistics of the US 1957: Vol. II – Mortality Statistics. HEW, 1959. p. 108.

Source

Public Health Service. Vital Statistics of the United States 1957, Volume II, Mortality Data. Washington, DC: U.S. Department of Health, Education, and Welfare. Washington: U.S. Government Printing Office, 1959. Accessed 3-16-2023 at: https://www.cdc.gov/nchs/data/vsus/VSUS_1957_2.pdf