Following the 2023 AGM, WCC had a fascinating Workshop on LIFE Magazine photographers with Alwyn Hanson.
“LIFE Magazine is the treasured photographic magazine that chronicled the 20th Century. It now lives on at LIFE.com, the largest, most amazing collection of professional photography on the internet. Users can browse, search and view photos of today’s people and events. They have free access to share, print and post images for personal use.” Google books.

Originally snapped in 1957 at one of the early Civil Rights rallies in Washington D.C., the photo would go on to become one of the most famous of the Reverend and one of the most recognizable photos of the Civil Rights Movement itself. Despite being taken nearly nine years earlier, the photo was not published until a week after King was assassinated in 1968.
Alwyn noted that the whole archive of Life Magazine was now available on Google Books (https://books.google.com.au/books?id=z0kEAAAAMBAJ&source=gbs_all_issues_r&cad=1&atm_aiy=1936#all_issues_anchor).

The archive is also accessible via the internet archive https://archive.org/details/pub_life?tab=collection as well as at https://www.life.com/life-picture-collection/.