Hello Histarch-ers, I'm inspired by all the industrial machine/process expertise we evidently have on this list to make an appeal for help in identifying an artifact found this summer at my ca. 1885-1935 dissertation research site in Tulare Co., California: It's a cast iron object which looks like some sort of cylinder head, and measures very roughly 10" x 6" x 1.5". The number on the top view is "6251[?]1-4." Pictures here: https://webfiles.berkeley.edu/stacyk/public_html/Machine_Part.jpg Any ideas on what kind of engine/machine this may be from? Thanks! Stacy Kozakavich Ph.D. Candidate Department of Anthropology University of California, Berkeley