John H. De Wild, Elements of show card writing (1923)
“ The student will do well however to stick to the plain alphabet until the various letters are thoroughly mastered.Among printers, this alphabet is known as “Gothic,” and some showcard men call it a “block” letter. The term “block” comes from the fact that most of the letters should occupy the same amount of spacing.While not a beautiful alphabet—it comes in very conveniently, and is a splendid letter for making bold lines. As an illustration—the word “HATS” is a comparatively weak word on a large show card, unless the lettering is heavy, or embellished with some shading or outlining. ”
