There are different versions of which quads belong to Washington. There following edge quads are listed on my index map but have no DRG files in the Washington data set:
o45118h6
o45118h7
o45121e8
o47123h8
o48122g7
o48123b2
The following edge quads were downloaded from gsidatadepot and added to this dataset:
o45122e6
o45122f7
o45122g7
o45122h7
The following edge quads are represented by DRG files but are not on my index map:
o45117h7
o45117h8
o46123a1
o46123a2
o46123a3
o46123a4
o46123a5
o46123a6
o46123a7
o46123a8
o46123b6
o46124b1
o48123b1
Seattle North, Bellevue, Seattle South, and Bellevue South are 15' wide, and are represented by
k47122e1
k47122e3
k47122f1
k47122f3