A 22-page publication titled 'Road of Yokohama' , subtitled 'Tasks Facing Yokohama as it Approaches the 21st Century', which describes how Yokohama's roads have been modernized in the 20th century, written in both English and Japanese. This was published by the Road and Highway Bureau, City of Yokohama, in July 1989. Yokohama, Japan, has been a San Diego Sister City since 1957.