Layer Estimates:

Layer: Falls in Rivers (ID:0)
Count: 143
Extent:

XMin: -9945713.6247
YMin: 4154685.6635
XMax: -7430951.9432
YMax: 6674073.4667
Spatial Reference: 102100 (3857)

Layer: Natural Feature Captions (ID:1)
Count: 4
Extent:

XMin: -10050765.9342
YMin: 4099307.8791
XMax: -8407600.0979
YMax: 5309983.3576
Spatial Reference: 102100 (3857)

Layer: Unknown River Features (ID:2)
Count: 4
Extent:

XMin: -11271619.5735
YMin: 5309642.6518
XMax: -10465537.6268
YMax: 5948552.1927
Spatial Reference: 102100 (3857)

Layer: Mississippi River Descriptors (ID:3)
Count: 8
Extent:

XMin: -10476250.1342
YMin: 3222163.9201
XMax: -9776465.0521
YMax: 4872058.075
Spatial Reference: 102100 (3857)

Layer: Ohio River Descriptors (ID:4)
Count: 3
Extent:

XMin: -9827307.9999
YMin: 4405234.3549
XMax: -9376969.9231
YMax: 4786741.1485
Spatial Reference: 102100 (3857)

Layer: Vague Descriptors of Large Areas (ID:5)
Count: 6
Extent:

XMin: -11230444.5764
YMin: 3179748.7632
XMax: -9184112.978
YMax: 5217375.7448
Spatial Reference: 102100 (3857)

Layer: Unknown Lands - Large Caption (ID:6)
Count: 1
Extent:

XMin: -11265523.366
YMin: 4707932.8594
XMax: -10930232.5653
YMax: 4839383.7593
Spatial Reference: 102100 (3857)

Layer: Natural Features w/ Multiple Names (ID:7)
Count: 2
Extent:

XMin: -10297888.9232
YMin: 6508619.4621
XMax: -7414057.075
YMax: 6627714.4771
Spatial Reference: 102100 (3857)

Layer: Natural Passage (ID:8)
Count: 2
Extent:

XMin: -11240566.5829
YMin: 6435653.2671
XMax: -10283536.0425
YMax: 6692942.1611
Spatial Reference: 102100 (3857)