Condition: Very Good. The reference set exhibits minor shelf wear, soft bumping on the upper spine corners, and clean interior pages free of annotations. It measures approximately 9 inches high by 10.5 inches wide when lined up collectively. Prominent markings include the stamped gold title lettering, distinct red and black faux-leather accent bands, and a crisp "Reprinted by Armory Publications 1991" publisher's mark on the title page. This item consists of the first six consecutive hardcover volumes spanning historical corporate documents from 1865 to 1897 without any slipcases or original mailing boxes. It serves as a highly detailed facsimile compilation published by Armory Publications to replicate the rare early trade catalogs used in the company’s internal patent library.