There are no original historical documents. The pictorial files are divided into historic sites, portraits, and places. They contain original photographs of historic homes and sites taken from 1934 to 1936, some of which, are presumed to have been photographed by Dr. Hogan. There are also prints, lithographs, photocopies, and photostatic copies of prints which illustrate historical sites, people, places, and events from about 1775 to 1856. Very few of these are dated.
Letters accompany many of the pictorial items and explain historical background and origination.
Hogan acquired these prints from 1945 to 1946. Some of the prints mentioned in the letters are not in the files, presumably because they were sent to the publisher. There is one printed item at the end of the collection, a profile of the history department at Tulane University, c.1965, which includes a photograph of the faculty. Photographs and prints were removed from heavy plastic folders and were placed in two mil mylar, photographic sleeves. A few fragile items were encapsulated.