| Title |
Record Date
|
|||
|
|
A2007-002.4222 : Bonneville Dam gates | 04/19/1964 | ||
|
|
A2007-002.4224 : John Day Dam, navigation locks | 08/01/1971 | ||
|
|
A2007-002.4223 : Bonneville Dam, Columbia River | 03/30/1972 |