This section is from the book "Text-Book On Domestic Art", by Carrie Crane Ingalls. Also available from Amazon: Textbook On Domestic Art: With Illustrations And Drafts.
Take 1/2 sheet of drafting paper.
Construct half a rectangle, with fold at left. Use this for the vertical line, and the top edge of paper for horizontal line.
Mark upper left corner A.
Dot 1 is 1/5 the neck measurement plus 1/4 inch down from A.
Dot 2 is depth of armseye measurement down from Dot 1.
Dot 3 is length of front measurement down from Dot 1.
Dot 4 is 5 inches below Dot 3.
Dot 5 is 2 1/2 inches to right of A.