Jeffrey Mishlove and Callum Cooper touch on the situation in this "New Thinking Allowed" interview about Alex Tanous. Cooper would like to get access on the notes about Tanous made by Karlis Osis held by the ASPR. He encourages any listeners who find themselves in New York to visit (or try to visit) the ASPR library and to give him feedback on their experiences.
https://www.youtube.com/watch?v=VuuDgaAjLDA
https://www.youtube.com/watch?v=VuuDgaAjLDA