Layer Estimates:

Layer: 1990 Census Blocks (ID:1)
Count: 4111
Extent:

XMin: 11743102.0001491
YMin: 3687673.50003272
XMax: 11806053.999901
YMax: 3744861.00015882
Spatial Reference: 102747 (2284)

Layer: 1990 Census Block Groups (ID:2)
Count: 207
Extent:

XMin: 11743102.0001491
YMin: 3687673.50003272
XMax: 11806053.999901
YMax: 3744861.00015882
Spatial Reference: 102747 (2284)

Layer: 1990 Census Tracts (ID:3)
Count: 82
Extent:

XMin: 11743102.0001491
YMin: 3687673.50003272
XMax: 11806053.999901
YMax: 3744861.00015882
Spatial Reference: 102747 (2284)