Hello Vincent, welcome! I received some of this paper around a decade and a half ago and, like you, found very little information about it. The links I found are both Linagraph papers, but different Type numbers. My paper is different again from those in the links below and yours, also, but the comment section of Richard's blog and the data sheet found at my local museum each provide some clues as to the papers' usage. Richard used his in a camera to make paper negatives and I used mine beneath an enlarger (I didn't know about paper negatives back then).
Anyway, I hope you might glean some small insight into its original use from the only two sources I found about Kodak Linagraph Paper:
Data Sheet at Museums, Victoria, Australia:
Data sheet or specification sheet for Kodak Linagraph Direct Print Papers, both Type 1799 (Extra Thin) and 1801 (Standard), outlining their physical and photographic properties. This was published by the Instrumentation Product Sales division of Eastman Kodak Company, Rochester, in 1967.
collections.museumsvictoria.com.au
Richard's blog at Camera Mods & Hacks:
I was experimenting with some stuff called Kodak Linagraph paper today. I really can't find much about it on the web, but it seems rather w...
cameramods.blogspot.com
Kindly,
Molli