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 145
The model cup is four inches deep with a base two and a quarter inches indiameter and a circular opening at the top three and a half inches in diameter.It will be well to have the drawing made on a scale j4 to i (one halfinch to one inch), /. e., exactly half size. The illustrations on page 133,…
Drawing -- Study and teaching
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