Help needed in ID'ing film

[Greg]

Over the years have acquired several boxes of films that I can't ID

Boxes of 4x5 film unopened
T P 5 F
Process in DD1437 only (repeated 3 times on the boxes)
boxes are (Agfa) orange

Boxes of 11x14 film unopened
PREMIUM HD negative film
31-4289-202
Graphline brand white boxes

Anyone have any idea on what these films are or used for?
My guess is that they were "scientific use" films.
Also suggestions on how to go about testing sheets of both films? Where does one start?
thanks

[Chauncey Walden]

Check this out: https://www.tandfonline.com/doi/abs/10.3109/01913128309140576?journalCode=iusp20

[Greg]

Check this out: https://www.tandfonline.com/doi/abs/10.3109/01913128309140576?journalCode=iusp20

Thanks so much. At least I now have a probable starting point. I was under the impression that EMs only used glass plates... I guess that really dates me:-)