How to Draw Proportions

Hieroglyphic or Greek Method of Life Drawing, By Adolphe Armand Braun
Proportions of the Medicean Venus by leomenes, Roman Athenuan School.. The figure is shown as 8 heads high. See more examples from the book here.

Beauty Has a History - Part 2

Horse Anatomy - A Handbook for Artists Comprising the Study of the Proportion and Action of the Horse as Compared to Man,.
At Amazon.com Horse anatomy;: A handbook for artists, comprising the study of the proportion, structure and action of the horse as compared to man by Lewis S. Brown.
This unusual book was a long term project and a labor of love by Lewis Brown. It is the compilation of hundreds of pieces of information and measurements turned into drawings comparing man to the horse and other drawings of the horse in motion.

From an 1919 volume on the drawing Die Handzeichnung. Ihre Techunk und Entwicklung., by Joseph Meder.
DIE HANDZEICHNUNG : Ihre Technik und Entwicklung (zweite, verbesserte auflage)., another copy.
Mastery of Drawing, English reprint from 1978.
Proportions of the male figure - Leonardo
Leonardo's Notebooks

Human Proportions for Artists (Spiral-bound) by Avard T. Fairbanks (Author), Eugene F. Fairbanks (Author)
This is a comprehensive studio guide to human proportions listing over one hundred measurements of both male and female figures with head and face details. Measurements are in both inch and metric systems and fractions are in columns from heroic to 1/12 life size. Section are included on relative and comparative proportions and of dynamic symmetry.