Three of Lewis F. Day's Text Books of Ornamental Design bound together: The Anatomy of Pattern, The Planning of Ornament, and The Application of Ornament. The books explain how repeating patterns are built on square, diamond, triangle, hexagon, circle and ogee plans, how drop repeats work for weavers and printers, how borders and panels are laid out, and how material, tool and process shape ornament. Roughly 130 full-page plates show diapers, damasks, Sicilian silk, tapestry, velvet, wall-paper, tile, stencil and carved examples. The text is general design theory and has no weaving drafts, though it often refers to the loom and to textile repeat.

A 1903 textbook for design students on the anatomy, planning and evolution of repeating ornament, written as a replacement for the author's earlier "Anatomy of Pattern". It builds from geometric scaffoldings (square, triangle, octagon, circle) to drop repeats, smaller repeats, turnovers and turn-rounds, then covers how manufacturing technique shapes pattern (block printing, weaving, damask, carpets), design method, proving a pattern, colour, borders, non-repeating pattern and the invention of pattern. It is illustrated with several hundred line diagrams and examples drawn from historic silks, velvets, tiles, wall-papers and Oriental ornament.

The opening chapter of Lewis F. Day's 'Pattern Design' (1903), a student's guide to the planning and evolution of repeated ornament. It argues that pattern results from repetition, is tied to manufacture, and always rests on a geometric basis, so a designer must plan the lines of a repeat deliberately and not leave them to chance. Four illustrations include a Japanese peach-blossom-on-ice design, a pattern with planned gaps, a heraldic panel and a balanced scroll wall pattern.