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| 1909 | 2009 |
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| Thomas Bros. | Thos. Bros. Detail | |
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| San Francisco North 7.5' Quad |
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| Geology SF North 7.5' Quad Map |
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| Geology SF North 7.5' Quad Explanation (Surficial Deposits) |
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| Geology SF North 7.5' Quad Explanation (Bedrock) |
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| Eddy, 1851 (Water Lots) |
Eddy, 1851 (Lots 323/324 = Block 135) |
Karp, 1985 (Annotated) |
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| Joyner, 1985 (Landward Limit of Bay Mud Deposits) |
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| SRI Map (bounded by Sansome, Green, Front
& Vallejo Streets, divided by Battery St.) |
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| Excavation for Grade Beam at Intended Moment Frame, Near Battery Street |
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| Excavation for Grade Beams at Two Intended
Moment Frames, Interior of Building |