1801  (1933)  Some of the men [are] at work making horse sledges, others melting or boiling back (Buffaloe) fat to put in the Pimican. . . .
1913  We took the tongue, the boss and the backfat and rode back to camp.
1923  (1926)  The Indians killed the buffalo recklessly . . . they killed for the tongues and backfats alone.
1965  A bull caribou in the autumn may weigh 300 pounds, and a fifth of that weight may be fat--perhaps 40 pounds in a single slab of back fat. . . .