|  |  | Captain George Peacock : the pioneer commander of Pacific steamers | Analytt | 386(091)(05) M 34 Duncan, Roland E. / I: The Mariner's mirror.  - Årg. 66 Nr. 1, 1980 - Cambridge. - 17-29
 | Duncan, Roland E. |  | 
				|  |  | Chile and Peru : the first successful steamers in the Pacific | Analytt | 386(091)(05) A Duncan, Roland E. / I: The American Neptune.  - Årg. 35 Nr. 4, 1975 - Salem; Mass.. - 248-274
 | Duncan, Roland E. |  |