1. Gulf Intracoastal Waterway. Navigation maps of Gulf Intracoastal Waterway, Port Arthur, Tex., to New Orleans, La., including Morgan City-Plaquemine route, also showing confluent Atchafalaya River system and outlets to Gulf. Scale 1:62,500. 3d edition, Sept. 1946. n. p. Bookmark Corporate/Agency Authors: Mississippi River Commission, Engineer Department, and Adjutant General's Department Publisher: Mississippi River Commission Date: [1946] SuDoc number: W 31.7:In 8/946