[50] Plymouth Rocks, s. Huhn, S. 617.
Brockhaus-1809: Plymouth
Brockhaus-1837: Plymouth
Brockhaus-1911: Rocks · Plymouth · Plymouth [2]
DamenConvLex-1834: Plymouth
Herder-1854: Plymouth
Meyers-1905: Rocks · Longships Rocks · Plymouth [2] · New Plymouth · Plymouth [1]
Pierer-1857: Mac Gilly Cuddy Rocks · Small's Rocks · Hergests Rocks · Freres Plymouth · Plymouth