Regarding NB Tindale's (see AA 338) comments on JB Birdsell's doctorial thesis and EA Hooton's reply to Tindale's letter is attached.
Enclosed is NB Tindale's 'Trihybrid origin of the Australian Aboriginal: Notes and Comments on Birdsell's Thesis'.
This item is thirteen loose pages, the first page of NB Tindale's letter is missing.