The American Printer: A Manual of Typography / Containing practical directions for managing all departments of a printing office, as well as complete instructions for apprentices; with several useful tables, numerous schemes for imposing forms in every variety, hints to authors, etc.

by Thomas MacKellar

Inner Form of a Sheet of Eighteens, to be folded together.

Inner Form of a Sheet of Eighteens, with One Signature.

Outer Form of a Sheet of Eighteens, with Two Signatures.

Outer Form of a Sheet of Eighteens, with Three Signatures.