Topics in Mathematics Archive
at University of Tennessee Knoxville:
http://archives.math.utk.edu/topics/history.html
Lectures at Gresham College UK:
https://www.gresham.ac.uk/watch/?subcat=history-of-mathematics
History of
Mathematics at Clark University:
https://mathcs.clarku.edu/~djoyce/ma105/
History of
Mathematics Video Lectures at University of New South Wales:
https://cosmolearning.org/courses/history-of-mathematics-547/video-lectures/
History of Mathematics
at University of St Andrews Scotland:
https://mathshistory.st-andrews.ac.uk/