DCHP-1 Online
Northwest iron Obs. 
a thong of rawhide.
See also: Northwestern iron shaganappi ((n.)) (defs. 1 and 2)
- 1890 The last, but not the least, important product of the buffalo was shaganappi, or as it was often called "North-West Iron."
- 1910 [Shaganappi, or "Northwestern Iron" was an important factor in the economic development of the N.W. . . .]
- 1890 The last, but not the least, important product of the buffalo was shaganappi, or as it was often called "North-West Iron."