http://www.acsu.buffalo.edu/~dbertuca/maps/cat/map-cat-toolbox.html
https://web.library.yale.edu/cataloging/cartographic/resources
British Cartographic Society map curator’s toolbox https://www.cartography.org.uk/the-map-curators-toolbox-7
WAML cataloger’s toolbox https://waml.org/resources/toolbox/maps/cataloging-processing/