Layer Estimates:

Layer: USNG_100000_Meter (ID:0)
Count: 24
Extent:

XMin: 300000.0285
YMin: 4699999.0146
XMax: 699999.9827
YMax: 5299998.9242
Spatial Reference: 102388 (6348)

Layer: Maine Counties (ID:1)
Count: 7196
Extent:

XMin: 336630.278358529
YMin: 4752815.4952282
XMax: 667255.184707433
YMax: 5256292.49574988
Spatial Reference: 102388 (6348)

Layer: 2020_TileIndex(QL1) (ID:2)
Count: 128
Extent:

XMin: 356338.6596
YMin: 4773000
XMax: 375181.8372
YMax: 4792500
Spatial Reference: 102388 (6348)

Layer: 2020_TileIndex(QL2) (ID:3)
Count: 3274
Extent:

XMin: 360913.1474
YMin: 4767126.8179
XMax: 478803.5092
YMax: 4927203.5161
Spatial Reference: 102388 (6348)

Layer: 2022_TileIndex (ID:4)
Count: 2984
Extent:

XMin: 337500
YMin: 4782500
XMax: 469500
YMax: 4955000
Spatial Reference: 102388 (6348)