Videos:

Making Rawhide: Coalcracker Bushcraft:  Demonstrates how process deer hide from soaking after fleshing through hand de-hairing.  He then demonstrates racking and stretching.

How to Remove Backstrap Sinew Cleanly without Wasting any Meat: Skill Cult:  Video of how to remove sinew which is used unprocessed, like rawhide, for thread.

Making a Rawhide Pouch: Earth Skills Handbook:  Tracker student, Chris Egnoto demonstrates how to make a pouch out of rawhide with a great screw in wood top!

Articles:

Link to Pinterest Page with various rawhide containers