Peter learned landscape techniques from studying the work of Belmore Browne, Aldro T. Hibbard, Carl Rungius, and the Group of Seven painter J. E. H. MacDonald.
Naturalist painters Bruno Liljefors, Carl Rungius and sculptor Rembrandt Bugatti have been cited as influential in his approaches to his work.
Carl Sagan | Carl Jung | Carl Orff | Carl Maria von Weber | Carl Lewis | Carl Zeiss AG | Carl Linnaeus | Carl Sandburg | Carl XVI Gustaf of Sweden | Carl Levin | Carl Zeiss | Carl Michael Bellman | Carl Friedrich Gauss | Carl Froch | Carl Perkins | Carl von Clausewitz | Carl Reiner | Carl Hancock Rux | Carl Gustaf Emil Mannerheim | Carl Edwards | Carl Cox | Carl Bildt | Carl Barks | Carl Wilson | Carl Schmitt | Carl Milles | Carl Crawford | Carl Bernstein | Carl Andre | Carl Van Vechten |
The other eighteen men who were awarded this distinction were: Roy Chapman Andrews, Robert Bartlett, Frederick Russell Burnham, Richard E. Byrd, James L. Clark, Merian C. Cooper, Lincoln Ellsworth, Louis Agassiz Fuertes, George Bird Grinnell, Charles A. Lindbergh, Donald Baxter MacMillan, Clifford H. Pope, George Palmer Putnam, Kermit Roosevelt, Carl Rungius, Stewart Edward White, and Orville Wright.
The other eighteen who were awarded this distinction were: Roy Chapman Andrews; Robert Bartlett; Frederick Russell Burnham; Richard E. Byrd; George Kruck Cherrie; Merian C. Cooper; Lincoln Ellsworth; Louis Agassiz Fuertes; George Bird Grinnell; Charles A. Lindbergh; Donald B. MacMillan; Clifford H. Pope; George Palmer Putnam; Kermit Roosevelt; Carl Rungius; Stewart Edward White; Orville Wright.
The other eighteen men who were awarded this distinction were: Roy Chapman Andrews; Robert Bartlett; Frederick Russell Burnham; Richard E. Byrd; George Kruck Cherrie; James L. Clark; Merian C. Cooper; Louis Agassiz Fuertes; George Bird Grinnell; Charles A. Lindbergh; Donald Baxter MacMillan; Clifford H. Pope; George Palmer Putnam; Kermit Roosevelt; Carl Rungius; Stewart Edward White; Orville Wright.
The other eighteen who were awarded this distinction were: Roy Chapman Andrews; Robert Bartlett; Frederick Russell Burnham; Richard E. Byrd; George Kruck Cherrie; James L. Clark; Merian C. Cooper; Lincoln Ellsworth; George Bird Grinnell; Charles A. Lindbergh; Donald Baxter MacMillan; Clifford H. Pope; George Palmer Putnam; Kermit Roosevelt; Carl Rungius; Stewart Edward White; Orville Wright.