Merrick has provided the County of Sonoma with an ArcINFO coverage named "model" which contains the model limits (lines) and photo centers (points) for the orthophotography tiles. It also contains annotation (anno.dxf) with the photo center numbers. The key item in both the .aat and .pat is dxf-layer.
.aat dxf-layer
mdllay_600,mdllay_1200,mdllay_2400
.pat dxf-layer
photoctrs_1200, photoctrs_2400, photoctrs_cotati, photoctrs_petalum, photoctrs_rohnert, photoctrs_santaro
Creator:
Merrick Company
Publisher:
Santa Rosa (Calif.). County Of Sonoma Gis Central.