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1. Geology of the Duluth metropolitan area, Bulletin 33, Plate 1

1949. Schwartz, George M. Maps showing sequence of geologic units (beds) alongshore from Mesaba Avenue to Beyond Lakewood, scale 1 inch = about 1,800 feet.

2. Geology of the Duluth metropolitan area, Bulletin 33, Plate 10

1949. Schwartz, George M. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 49 North, Range 17 West, sc...

3. Geology of the Duluth metropolitan area, Bulletin 33, Plate 11

1949. Schwartz, George M. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Townships 49 and 50 North, Range 14 ...

4. Geology of the Duluth metropolitan area, Bulletin 33, Plate 12

1949. Schwartz, George M. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 50 North, Range 15 West, sc...

5. Geology of the Duluth metropolitan area, Bulletin 33, Plate 13

1949. Schwartz, George M. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 51 North, Range 12 West, sc...

6. Geology of the Duluth metropolitan area, Bulletin 33, Plate 14

1949. Schwartz, George M. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 51 North, Range 13 West, sc...

7. Geology of the Duluth metropolitan area, Bulletin 33, Plate 15

1949. Schwartz, George M. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 51 North, Range 14 West, sc...

8. Geology of the Duluth metropolitan area, Bulletin 33, Plate 16

1949. Schwartz, George M. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 51 North, Range 15 West, sc...

9. Geology of the Duluth metropolitan area, Bulletin 33, Plate 17

1949. Schwartz, George M. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 52 North, Range 11 West, sc...

10. Geology of the Duluth metropolitan area, Bulletin 33, Plate 18

1949. Schwartz, George M. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 52 North, Range 12 West, sc...