Indian and non-Indian colleagues and friends in Indian Country feature in the photos I've just posted. Most or all of them were taken by Felix and Lucy Kramer Cohen in Indian Country during the 1930's while working for the Interior Department. We can identify only a few of the people and places and events. So if you might recognize any people active in Indian affairs during the mid and later 1930's, please take a look.
We think we've spotted Tom Dodge, son of Henry Chee Dodge. Tom Dodge was chair of the Navajo Tribal Council between 1933 and 1936 [Wikipedia]. We identified Dodge by his distinctive white stripe of hair, as seen in a photo on http://www.lapahie.com/henry_chee_dodge.cfm. He appears in the audience of a large Navajo meeting and among a group of men meeting with Felix, perhaps working on a constitution draft or other document. Many of those photographed are working on writing or listening intently at meetings--possibly related to considering whether to adopt a constitution under the Indian Reorganization Act or what should be in such a document.
I'll refine the organization of the photos and add additional info as I or others learn it.