Webster Signature Database - Suggest Correction

Signature Maker Instruments Comments Location References
BUTTERFIELD, HORACE S. USA, c.1815, MIM made an astronomical calculator with Olof Ohlson. Portland, Oregon. A.H. Brown.

E-mail address:
Explain your correction here:
To protect against spam entries,
please type the sum of 5 and 2 into this box
(i.e. the number between 6 and 8):