A Swiss son asked me to post these links:
http://www.napoleon-series.org/cgi-bin/forum/webbbs_config.pl?page=1;md=read;id=191156
More details here:
https://polona.pl/item/sources-documentaires-concernant-l-histoire-du-regiment-des-chevau-legers-de-la-garde-de,MjUxMjA2NDk/901/#item
https://polona.pl/item/sources-documentaires-concernant-l-histoire-du-regiment-des-chevau-legers-de-la-garde-de,MjUxMjA2NDk/917/#item