The following review of two books was written by Bobbi King:
A Page of History
Passport Applications 1851-1914; Passport Applications Volume II 1915-1925
by Phil Goldfarb
Tate Publishing and Enterprises, LLC
These two volumes of A Page of History are not exactly genealogy books, but rather, books of general historical interest. Of course, if your ancestor happens to be one of the famous people included in the books, then your interest is very personal. And someone writing a biography of any of the persons in the book could find additional material.
The first pages detail a short history of passport applications, a brief summary of passports in the United States and passport application forms, and types of passport applications.