| Welch, Albert E.; 1900 Red Book; 1900 | 1900 Red Book | 1900-00-00 | CONESTOGA | Chief Engineer |
| Welch, Albert E.; 1901 Red Book; 1901 | 1901 Red Book | 1901-00-00 | CONESTOGA | Chief Engineer |
| Welch, Albert E.; 1902 Red Book; 1902 | 1902 Red Book | 1902-00-00 | CONESTOGA | Chief Engineer |
| Welch, Albert E.; 1903 Red Book; 1903 | 1903 Red Book | 1903-00-00 | CONESTOGA | Chief Engineer |
| Welch, Albert E.; 1905 Red Book; 1905 | 1905 Red Book | 1905-00-00 | CLARION | Chief Engineer |
| Welch, Albert E.; 1906 Red Book; 1906 | 1906 Red Book | 1906-00-00 | CLARION | Chief Engineer |
| Welch, Albert E.; 1907 Red Book; 1907 | 1907 Red Book | 1907-00-00 | CLARION | Chief Engineer |
| Welch, Albert E.; 1908 Lynn's; 1908 | 1908 Lynn's | 1908-00-00 | CLARION | Chief Engineer |
| Welch, Albert E.; 1910 Red Book; 1910 | 1910 Red Book | 1910-00-00 | LEHIGH | Chief Engineer |
| Welch, Albert E.; 1911 Red Book; 1911 | 1911 Red Book | 1911-00-00 | SCHUYLKILL | Chief Engineer |
| Welch, Albert E.; 1913 Red Book; 1913 | 1913 Red Book | 1913-00-00 | SCHUYLKILL | Chief Engineer |
| Welch, Albert E.; 1914 Red Book; 1914 | 1914 Red Book | 1914-00-00 | SCHUYLKILL | Chief Engineer |
| Welch, Albert E.; 1915 Red Book; 1915 | 1915 Red Book | 1915-00-00 | SCHUYLKILL | Chief Engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | Chief Engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | Chief Engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | Chief Engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | Chief Engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | Chief Engineer |
| Welch, Albert E.; Toronto Historical Society | Toronto Historical Society | | CLARION | Chief Engineer |