George Fullmer mentions Andrew L. Lamoreaux's killing of three Indians.

Date: Feb 16, 1850
Type: Letter
Source: George Fullmer
LDS
Hearsay: Holograph
Direct
Reference: Sgt. George Fullmer, Letter to Daniel H. Wells, February 16, 1850, Territorial Militia Records, Utah State Archives
Scribe/Publisher: N/A
People: Daniel H. Wells, George Fullmer, Andrew L. Lamoreaux
Audience: Daniel H. Wells
Transcription: In case you have not been informed of Capt. A.L. Lammoreaux's success in killing the three Indians who were left on Peteteneet Creek, we now mention it as an express arrived last night from that quarter.
Source Link: https://archives.utah.gov/research/inventories/2210.html
Citations in Mormonr Qnas: Native American Extermination Order