Glen Creason has been the map librarian for the Los Angeles Public Library for the past twenty-one years and a reference librarian in the History department since Jimmy Carter was president. He was a co-curator of the landmark map exhibit "Los Angeles Unfolded" and has written about local history, maps and popular culture for local publications including the Downtown News, Mercators World, the Public Historian, the Communicator the Los Angeles Times and Edible Ojai. He is the author of the book "Los Angeles in Maps" and has been a speaker at local events such as the Society for Professional Journalists, the Center for Land Use Interpretation, and the California Map Society.

D. J. Waldie is the author of books, essays and blogs about Los Angeles and Southern California. He is a contributing writer at Los Angeles magazine and a contributing editor for the Los Angeles Times. His book reviews and commentary have appeared in the Los Angeles Times, the Wall Street Journal, and the New York Times. He has lectured on the social history of Los Angeles locally and internationally. He blogs at KCET/Voices. His most recent book is California Romantica, in collaboration with Diane Keaton.