The Carnets de la Sabretache are indeed an excellent resource - the society is still going and has published a number of on line articles and has a table of contents for the Carnets from 1893-2018 on the website - see http://lasabretache.fr/rechercher-un-ancien-article/?lang=en
A number of old issues are available on Gallica - https://gallica.bnf.fr/ark:/12148/cb34449073t/date&rk=21459;2
Good hunting!