https://pubmed.ncbi.nlm.nih.gov/7565998/#:~:text=The%20average%20life%20expectancy%20in,France%2C%20England%2C%20and%20Japan.

https://www.populationpyramid.net/united-states-of-america/1950/

https://www.infoplease.com/us/health-statistics/life-expectancy-age-1850-2011

https://knoema.com/atlas/United-States-of-America/topics/Demographics/Age/Life-expectancy-at-age-80-years

https://www.ssa.gov/history/lifeexpect.html

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4861644/

https://www.infoplease.com/us/health-statistics/life-expectancy-age-1850-2011

It’s not all “good news”. Recent data indicates that life expectancy varies greatly between US states, counties, cities and census tracts. My hometown’s life expectancy is just 73.6 years, about 5% (3.7 years) less than the national average of 77.3 years. My suburban Indianapolis home for the last 30 years shows an 81.6 year life expectancy, about 5% (4.3 years) higher. That’s an 8 year (10%) difference between two midwestern cities.

https://www.rwjf.org/en/library/interactives/whereyouliveaffectshowlongyoulive.html