Layer Estimates:

Layer: territories1850 (ID:0)
Count: 3
Extent:

XMin: -12389360.8662909
YMin: 5003630.85762307
XMax: -11558061.5878885
YMax: 5629220.79077444
Spatial Reference: 102100 (3857)

Layer: territories1861 (ID:1)
Count: 4
Extent:

XMin: -12390639.6893688
YMin: 5004852.78098983
XMax: -11558134.8421159
YMax: 5629743.80565752
Spatial Reference: 102100 (3857)

Layer: counties1868 (ID:2)
Count: 5
Extent:

XMin: -12388457.9111228
YMin: 5004056.55758182
XMax: -11557037.5610354
YMax: 5628475.29931947
Spatial Reference: 102100 (3857)

Layer: counties1876 (ID:3)
Count: 8
Extent:

XMin: -12388155.1202635
YMin: 5004733.28549272
XMax: -11558628.130724
YMax: 5629957.12154104
Spatial Reference: 102100 (3857)

Layer: counties1890 (ID:4)
Count: 15
Extent:

XMin: -12389285.6926005
YMin: 5003219.83238154
XMax: -11557079.8282126
YMax: 5629976.4816494
Spatial Reference: 102100 (3857)

Layer: counties1923 (ID:5)
Count: 23
Extent:

XMin: -12388137.2933444
YMin: 5004309.963319
XMax: -11557431.6050835
YMax: 5630136.73090663
Spatial Reference: 102100 (3857)

Layer: Counties2015 (ID:6)
Count: 23
Extent:

XMin: -12388137.2933444
YMin: 5004309.963319
XMax: -11557431.6050835
YMax: 5630136.73090663
Spatial Reference: 102100 (3857)