The most significant help on this project came from Andrea Broomfield, Kelley Graham, and especially Katharine L. Janoski. All three read the manuscript in its entirety, asked useful questions, and made suggestions for revision. I must also acknowledge my debt to the Internet's VICTORIA discussion list (managed by Patrick Leary at Indiana University, Bloomington), both for specific information and for a sense of questions that people commonly ask about the Victorian period.
Help in locating and procuring illustrations was provided by Phil Lapsansky and Amy Flemming at the Library Company of Philadelphia, by Penelope Myers at Temple University's Paley Library, and by staff at the British libraries and museums named in the credits to individual pictures. The illustrations not credited to any library, museum, or agency are from materials in my own collection and were photographed by Mercury Photo and Imaging, Philadelphia.