Pottery making: an illustrated text book on art pottery making for teachers and artists (1914)
Webb, Judson Thomas, 1859- · Chicago, Lewis institute · leaf 61
The pyramid is 4 high and 2square at the base. The sidefaces are triangles with the twosides longer than the base. Com-pare them with equilateral tri-angle. … 58
Pottery
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
