Two adjacent georeferenced grayscale (panchromatic) orthoimages covering
part of Concord, Massachusetts, USA comprising the following files:
 
   concord_ortho_e.tif
   concord_ortho_e.tfw
   
   concord_ortho_w.tif
   concord_ortho_w.tfw

Each orthoimage consists of a TIFF (.tif) and TIFF worldfile (.tfw) pair.
Each TIFF contains a 2000-by-2000 8-bit indexed-color image in which each
pixel corresponds to a 1-by-1 meter square in map coordinates.
The worldfiles contain georeferencing parameters.

Source
------
Office of Geographic and Environmental Information (MassGIS),
Commonwealth of Massachusetts  Executive Office of Environmental Affairs
(http://www.state.ma.us/mgis/)
 
Coordinate system/projection
----------------------------
All data distributed by MassGIS are registered to the NAD83 datum,
Massachusetts State Plane Mainland Zone coordinate system. Units are in
meters.
 
Data set construction
---------------------
concord_ortho_e is a subset of MassGIS 1-meter panchromatic orthotile
1_213910, cropped to the following bounding box:

              X (easting)   Y (northing)
       min      209000        911000
       max      211000        913000

concord_ortho_w is a subset of MassGIS 1-meter panchromatic orthotile
1_209910, cropped to the following bounding box:

              X (easting)   Y (northing)
       min      207000        911000
       max      209000        913000

Construction date
-----------------
December 31, 2003.