Nolan, S. W. (2017). Fixed in time: A guide to dating daguerreotypes, ambrotypes & tintypes by their mats and cases, for historians, genealogists, collectors and antique dealers (Third edition.). Portland, Oregon Territory: Sean William Nolan.

Nolan, Sean William. Fixed in Time: A Guide to Dating Daguerreotypes, Ambrotypes & Tintypes By Their Mats and Cases, for Historians, Genealogists, Collectors and Antique Dealers. Third edition. Portland, Oregon Territory: Sean William Nolan, 2017.

Nolan, Sean William. Fixed in Time: A Guide to Dating Daguerreotypes, Ambrotypes & Tintypes By Their Mats and Cases, for Historians, Genealogists, Collectors and Antique Dealers. Third edition. Portland, Oregon Territory: Sean William Nolan, 2017.