| Survey type |
M-A (magnetic; derived from analog data) |
| Flown by |
Aero Service Corporation |
| Date flown |
?/66 |
| Line spacing |
1.6 (km)
|
| Altitude |
304.8 (m) above ground
|
| Total distance |
12,713 (km)
|
| References |
|
| Counties |
Jo Daviess - Allamakee - Benton - Black Hawk - Bremer - Buchanan - Butler - Chickasaw - Clayton - Delaware - Dubuque - Fayette - Floyd - Franklin - Grundy - Hardin - Howard - Jackson - Jones - Linn - Mitchell - Tama - Winneshiek - Fillmore - Houston - Mower - Crawford - Grant - Vernon
|
| Overlapping surveys |
|
