[Scale 1:1,500,000, 3 in. .. 75 mi. Includes illustrations showing proposed canal routes, population, vegetation, and economic activity. Issued in envelope for mailing.]
Notes:
[Scale 1:1,500,000, 3 in. .. 75 mi. Includes illustrations showing proposed canal routes, population, vegetation, and economic activity. Issued in envelope for mailing.] * For Sale by Superintendent of Documents. Paper, 70c. • Sent to Depository Libraries. Item 856-A-1
Availability:
* For Sale by Superintendent of Documents. Paper, 70c. • Sent to Depository Libraries. Item 856-A-1