heliotyped

Updated: July 5, 2026

This can be done with a pen, and the written deficiency neatly inserted, in fac-simile of the type, or in ordinary script hand; or else the part wanting may be photographed or heliotyped by the best modern process from a duplicate copy of the book.

Ainsworth Rand Spofford - A Book for All Readers: An Aid to the Collection, Use, and Preservation of Books: and the Formation of Public and Private Libraries