An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian, by Nathaniel Lord Britton ... and Hon. Addison Brown ...

v. 1

Woody plants of the western national parks; containing keys for the identification of trees and shrubs, by Virginia Long Bailey and Harold Edwards Bailey.

no.4