are you sure?
(I would guess a lower bound might be whenever widespread availability of cheap paper occurred? parchment would've been way too expensive for checklists. with wax tablets, people would've made lists but just erased tasks when done)
NB. Google frequently mis-years books (easily double-checked against title page or anachronistic references); I should really check on Gallica or whatever the german equivalent may be...
similar usage from 1862: https://gallica.bnf.fr/ark:/12148/bpt6k54489650/f73.image.r=...
BTW, did you try looking in the Internet Archive (https://archive.org/details/texts)? It was a place where I found the earliest 1841 evidence.
Is there some document on the internet confirming this? I will update the blog post with this new information.