Online Book Subjects: Ferns Displaying 1 - 2 of 2 United States Exploring Expedition v.16 (1854) [Botany pt.2 Text] Brackenridge, William D. Printed by C. Sherman 1854-55 United States Exploring Expedition v.16 (1855) [Botany pt.2 Atlas] Brackenridge, William D. Printed by C. Sherman 1854-55