The methods by which they are made, marked, and corrected, with observations on proofreading.
A few suggestions as to proofreading and correcting may prove useful.
Sandra Peterson assisted with proofreading the later drafts.
The work of the editors has been vastly eased by Beata Prochnow Jorgenson's assistance in typing, proofreading, et cetera.
Ma Pettengill and I here quickly ...