Our guest manuscript for today’s puzzle comes from the [Collection That Shall Not Be Named], courtesy of @john_overholt, curator extraordinaire at @HoughtonLib.  Its identity and (suggested) transcription to be revealed in tomorrow’s challenge. 

As ever, the suggested solution to yesterday’s puzzle is shown below:

These mynds are more to ^^be desired of
every man than all the treasure of
all the princes and kings, christian and hethen
as were it gathered & layed to gether
all upon one hepe

Autograph prayer by Thomas More.  Book of hours (Sarum use), Paris, [1530]. MS Vault More, f. 26r