Teachers' manual for the Prang course in drawing for graded schools, books 1-6 (1897)
Clark, John Spencer, Prang Company, Hicks Mary D, Perry, Walter Scott · Boston. Prang educ. co. · leaf 216
2o6 TEACHERS MANUAL. [book VI. near the building, the downward slant of the horizontal edges would have been muchmore pronounced. The two outline diagrams above the tower show a good way of using skeleton
Drawing -- Study and teaching
Internet Archive · New York Public Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten20unit-207-78.webp)
