In 1967, Samuel founded the History Workshop movement
"History Workshop movement" here (https://hypothes.is/a/pzSbkDSWEe-GVmsfDdhvrg) is another good example of the serendipity of autocomplete functionality in Hypothes.is helping to link together disparate examples of ideas which I'd long since forgotten. In this case to a tangential idea I'd read about a year prior (https://hypothes.is/a/bxMX5MKJEe2Wkq_zinG3iw) and been interested in, but completely forgotten about.
Now I've got a link from that to the founder of the movement in 1967.