In 1991, Lt. Dennis Campbell completed a years long project that resulted in the publishing of Journey Through Time:A Pictorial History of the Prince George’s County Police Department. This history documents the founding of the department, originally in 1927, then its re-establishment in 1931.The 304-page, 8½ x 11 hardback book takes a look at events and people who have left their mark over a period of more than 60 years.It contains an 80,000-word text and 350 photographs.