Herb. Boston and Baldy. Recreation (George O. Shields, American Canoe Association). 1898-07, 9 (1): 3–7 [2020-07-15]. (原始内容存档于2021-04-15) –通过Google Books, digitized version of compendium edition.
Herb. Boston and Baldy. Recreation (George O. Shields, American Canoe Association). 1898-07, 9 (1): 3–7 [2020-07-15]. (原始内容存档于2021-04-15) –通过Google Books, digitized version of compendium edition.