To learn more about old photographs and their care, I ordered three books; An Ounce of Preservation by Craig Tuttle, Collector's Guide to Early Photographs by O. Henry Mace, and Care and Identification of 19th Century Photographic Prints by James Reilly.
Collector's Guide to Early Photographs goes beyond describing the basic types (categories) of old photographs. It provides entire chapters detailing the descriptions of each category and sub-categories of old photographs. There is specific advice regarding collecting each category of old photograph, as well as advice on which photographed subjects (animals, children, etc.) images are most rare / plentiful for collectors. Also detailed are the various markings used to identify the manufacturer of the daguerreotype plates, and the cases (small frames) in which they were mounted. All of which is important for identification of prized photographs in a collection. Also included is a listing of notable early photographers (ten pages long) whose work is of particular interest to collectors. There is rarely a page in the book doesn't include at least one picture / illustration of a category of photographs, photographed subjects, close up details of case markings, brass mats, etc. Approximately half the book is devoted to the non-paper based photographs (daguerreotype, ambrotype, and tintype) with the remaining half addressing the various paper based photographs.
Except for a few pages regarding restoration of "cased images," this book does not provide any significant advice on care and storage of photographs. The advice is that restoration should be left to trained individuals, as just about anything you do will damage the print.
This is an outstanding book for learning the details about the various categories and types of photographs in existence. Also, as the title indicates, it is a guide for collecting. Excellent details are given to help you begin or expand a collection of old photographs. If you prefer a concise overview of! the basic categories of old photographs, or desire details about common damage and how to minimize further damage, "An Ounce of Preservation" is a better book. If you need very detailed information about the care and preservation of paper prints (photographs after the daguerreotype, ambrotype, and tintype era), then "Care and Identification of 19th-Century Photographic Prints" provides that.