| Walker, Robert E.; 1899 Red Book; 1899 | 1899 Red Book | 1899-00-00 | SHENANDOAH | Chief Engineer |
| Walker, Robert E.; Detroit Free Press 2/29/1892 | Detroit Free Press 2/29/1892 | 1892-00-00 | WILEY E. EGAN | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | RALEIGH | First Assistant |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | RALEIGH | First Assistant |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | HUNTRESS | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | T. S. FAXTON | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | OCEANICA | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | ROBERT A. PACKER | First Assistant |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | TACOMA | First Assistant |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | A. J. WRIGHT | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | D. M. WILSON | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | D. M. WILSON | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | DEAN RICHMOND | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | DEAN RICHMOND | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | ROCHESTER | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | DEAN RICHMOND | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | STARRUCCA | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | STARRUCCA | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | ROCHESTER | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | H. J. JEWETT | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | VIRGINIA | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | EGYPTIAN | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | AMERICAN | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | KITTY M. FORBES | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | E. B. BARTLETT | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | SHENANDOAH | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | THOMAS WILSON | Chief Engineer |
| Walker, Robert E.; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | NORTH LAND | Chief Engineer |