The Broken Chain 1993

 This movie is 30 years old. Presumably made in the wave of Indian movies that happened after Dances with Wolves and Mohicans. Pierce Brosnan as Sir William Johnson Eric Schweig as Joseph Brant. It is not brilliant but it is OK. 

The Iroquois in the American Revolution

 Barbara Graymont. 1972. Have read this it's good. It's expensive to buy though. If you create an account below you can read it I think

 The Trail of the Iroquois Indians: How the Iroquois Nation saved Canada for the British Empire. By G. Elmore Reaman. They have this book in my library system. I have ordered it. Anyone read it? It's from 1967.

Old Fort Johnson

 https://en.m.wikipedia.org/wiki/Old_Fort_Johnson#

Johnson's home until 1763

Old Fort Johnson in 1753. (Drawn by Col. Guy Johnson.)

Drums Along the Mohawk novel audio version

 I am going to get this. On Amazon. It's unabridged and this way my wife can listen too as I think she will enjoy it. 

Johnson Hall

Built in 1763.  A 1903 painting despicts the presentation in 1772 of medals to the Six Nations Iroquois

 By Edward Lawson Henry

 

Loyal to the Crown Robert Griffing (2014)