Elements of lettering ... A treatise on the history, classification, and practical application of the various styles of letters of the alphabet (1899)
International Correspondence Schools · Scranton, The Colliery engineer company · leaf 40
Fig. 17. Fig. 18. process it is necessary only to observe the rules of light andshadow, as shown in Fig. 18, by shading the letter on the leftand bottom sides from a line drawn through the center of theface of the letter. This form of shading is often used on agold or silver letter by the use of…
Lettering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.