Uncle Paul's Jazz Closet, the extremely cool web site sharing recordings and other items from Paul Motian's archives, has scanned and shared Motian's business calendar from 1965-66.
It has all his gigs, finances, and personal business for that year and a half. Some fun items in there, like the thing about Coltrane, and playing with Mose Allison at Birdland from 8:45-2:30 am, then playing with Sheila Jordan at Cafe au Gogo from 4-8 am for $10. Plus buying “plastic drum heads”, dental bills, jury duty, unemployment checks, and his address, so you can see where he lived at the time.
The site has been going since 2016 and they have shared a lot of music... I don't have to tell you to follow them... on Facebook too. In addition to the other things, they have published some volume's of Motian's tunes, which I need to buy because my transcriptions of them probably suck.