Maps in The New York Times, 1860-1980: a study in the history of journalistic cartography.

As photoengraving replaced woodcut engraving in the late 19th century The New York Times increased its use of maps to illustrate news stories and feature articles. Map use increased substantially from an average of less than one map-illustrated article per issue in 1930 to over three mapped articles per issue in 1940, principally because of the addition of a daily weather map in 1934 and increased coverage of events leading to American involvement in the Second World War. Another increase, to an average of nearly five map-illustrated articles per issue, occurred in 1960 and reflected an increased investment in science reporting, recreation and travel features, and articles on neighborhoods and the environment. The Sunday edition carries about three times as many maps as the average weekday edition. Most maps are a single column wide. In recent years maps in The Times have addressed national and local themes more frequently than global or foreign themes, and large- and intermediate-scale maps have become proportionately more common.-from Author