Source: /cirosantilli/scientific-autobiography-by-max-planck-1948

= Scientific autobiography by Max Planck (1948)
{c}

= Wissenschaftliche Selbstbiographie
{synonym}
{title2}

https://quoteinvestigator.com/2017/09/25/progress/ on <Quote Investigator> says it appeared in 1948. Can't easily check, but will believe it for now.