| 1829- |
Glenalvin is born. |
| 1840- |
Wallace is born. |
| 1846- |
William is born. |
| 1850's |
Began their career in York, Pennsylvania. |
| 1863- |
Glenalvin wins the prize for "best ambrotypes" at York
County Fair. |
|
Family forced to leave York because of the father's activities in
the Underground Railroad. |
| 1867- |
Glenalvin dies. |
|
Wallace and William open a studio in East Saginaw, Michigan. |
| 1872- |
Brothers rebuilt their studio after a fire |
| 1884 - |
Brothers commissioned by Department of Forestry to photograph views
of Saginaw Valley. |
| 1890 - |
William dies. |
| 1922- |
Wallace dies. |
