The Holyoke Warp Company was formed in 1869 as a weaving machine firm. Warp and weave are the terms to denote the waving of fabric by machine. The warp is the holding of the fabric strains apart and the weaving is the drawing of the fabric though.
Sanborn map analysis:
Sanborn 1884 map shows that the mill exists but the Sanborn does not detail it
Sanborn 1889 map shows that the mill exists but the Sanborn does not detail it
Sanborn 1915 map called the Highland
Sanborn 1949 map it is called the Highland Mill (paper)
Sanborn 1956 map it is called the Highland