Irwin's Annotations, Supplemental to Howell's Annotated Statutes, of Michigan Irwin, William W Heftet / 2008 / Engelsk
Mineral Resources of the Agua Tibia Primitive Area, California (Classic Reprint) Irwin, William P. Heftet / 2018 / Engelsk
Geologic Reconnaissance of the Northern Coast Ranges and Klamath Mountains, California: With a Summary of the Mineral Resources (Classic Reprint) Irwin, William P. Innbundet / 2018 / Engelsk
Irwin's Annotations, Supplemental to Howell's Annotated Statutes, of Michigan Irwin, William W Innbundet / 2008 / Engelsk
New Niagara Tourism, Technology, and the Landscape of Niagara Falls, 1776–1917 Irwin, William R. Heftet / 1996 / Engelsk
Geologic Reconnaissance of the Northern Coast Ranges and Klamath Mountains, California: With a Summary of the Mineral Resources (Classic Reprint) Irwin, William P. Heftet / 2018 / Engelsk
Mineral Resources of the Agua Tibia Primitive Area, California (Classic Reprint) Irwin, William P. Innbundet / 2018 / Engelsk