Correspondence : Porter (Thomas) and Engelmann (George), 1851-1882.

Porter to Engelmann, 1851-188

Map of the United States: showing the Principal Botanical Divisions.

Map shows the United States divided into regions based on primary vegetation and then into geographical subdivisions; state boundaries and major cities. Includes explanation of colors and key to letters and Roman numerals. Relief shown by hachures. Scale [ca. 1:13,100,000]. Partial text on the back provides a botanical description for the forest region -- including the Appalacian province and the southern province -- and the first part of the Florida region

An address delivered before the Frederick Female Seminary : at its annual commencement July 11th, 1850

Digitized copy of a pamphlet. 1 PDF file. 13 pages

Correspondence : Porter (Thomas) and Engelmann (George), 1851-1882.

Engelmann to Porter, 186