Aunt Beulah taught me to overseam and to hem.
"Elsie's New Relations" by Martha Finley
The overseam sewers earn large wages, and their places are much coveted.
"Scientific American Supplement, No. 794, March 21, 1891" by Various
There were long overseams in sheets; there was no end of shirt-making for the men.
"A Little Girl in Old Boston" by Amanda Millie Douglas
Either overseam these together to make a broad handle, or leave them separated to form a double handle.
"Construction Work for Rural and Elementary Schools" by Virginia McGaw