At this site you will find subfolders with various versions of the USGS Quadranglemaps:


FOLDER NAMES

`LADOTDQuadMapSeries - NEW REVISED Quad Maps by LADOTD in PDF format

HiRes		- High Resolution PDF for coastal Louisiana.
    HiRes.txt	- List of names for High Resolution PDF for coastal Louisiana.

HistoricQuadCollection - "Old" discontinued and updated USGS Quad Maps as follows:

		15X15 - 15-Minute Quad Map series
		1Z2 - 1:250,000 Scale Quad Maps
		30X30 - 1:125,000 Scale Quad Maps
		30X60 - 1:100,000 Scale Quad Maps
		7.5X7.5 - 1:24,000 Scale Quad Maps

IndexMaps	- Index maps for the whole state in TIFF format with names for the maps in the Quads folder.

OrthophotoQuads - USGS Orthophoto Quad Maps

Quads		- Old TIFF format images in subfolders, hard to find things, here.

                      Name 
                   starts with  Map Scale
                       "O"      1:24,000
                       "P"      1:24,000 Photo Quad
                       "F"      1:100,000
                       "C"      1:250,000
                              
STDRes	- Standa4d Resolution PDF for all of Louisiana.
    STDRes.txt	- List of names for Standard Resolution PDF for all of Louisiana.