We’re proud to be involved in the prototype augmented-reality cell phone application for phillyhistory.org, the online database of historic photographs and maps from the City Archives, the Water Department, the Office of the City Representative, the Free Library, and the Library Company of Philadelphia, originally built by Azavea Inc. The app is available at no cost for both iPhone and Android smart phones. The Encyclopedia’s editors participated as advisers to the project and coordinated text for a group of photographs, with Doreen Skala researching and writing the text.