Friis, Herman Ralph, 1905-  <br/><br/>
A series of population maps of the Colonies and the United States, 1625-1790 / 
by Herman R. Friis. 
 - Rev. ed. 
 - American Geographical Society :   New York,  1968. 
 - 52 p. :   illus., maps (1 fold.) ;   28 cm. 
 - American Geographical Society of New York. Mimeographed and offset publication no.3,rev. .
<br/><br/>Bibliography: p. 24-52. 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States--Population