| Survey type | M-Dz (magnetic; digitized from contour maps) |
|---|---|
| Flown by | USGS |
| Date flown | 01/64-02/64 |
| Line spacing | 0.8 and 1.61 (km) |
| Altitude | 152.4 (m) above ground |
| Total distance | 3,307 (km) |
| References | |
| Counties | Anne Arundel - Baltimore - Carroll - Frederick - Harford - Howard - Montgomery - Prince George's - Baltimore - Adams - York |
| Overlapping surveys |
| Metadata | Questions & Answers - Outline - Parseable text - XML |
|---|---|
| Download | MD0531.zip |
