Routes Proposed for Inclusion in National System of Interstate Highways1939-1947unknownhttp://rightsstatements.org/vocab/NKC/1.0/enghttp://congressarchives.org/record/CAC_CC_031_14_0000_7_199The document is a map indicating Routes Proposed for Inclusion in National System of Interstate Highways Map (national; diazotype, blueline print); 15 1/2 x 22 3/8 inches; P-3612.