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Need information About Existing Topographic Maps for Louisiana in Early 1950s

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#1
Textularia

Textularia

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Dear Sirs and Ladies,

I am trying to determine the topographic data, in the form of
topographic maps, that was available to Dr. Holland and other
LSU geologists when they made their geologic maps of Beauregard
and Allen parishes, Louisiana, between 1949 and 1951.

Does anyone know how I might find out what in the way of
topographic maps existed within the DeRidder and Ville Platte
30 by 60 quadrangles (Southwest Louisiana) in 1949-1952?

Does anyone know where I might a copy, preferably digital, of a
USGS index of maps for Louisiana that would show the published
topographic maps for some year in the early 1950s?

I have a 1979 USGS topographic index map for Louisiana. It shows
that most of the topographic mapping, mainly 15-minute quadrangles,
date to 1957, 1959, and 1961. The only earlier topographic maps are four
7.5-minute maps in the area of Elizabeth, Louisiana, that date to 1947.
However, I do not know if earlier editions of these maps had been
published and were replaced by these maps.

By the way, PDF files of some of our published 30 by 60 degree
geologic maps of Louisiana can be downloaded from links at:

http://www.lgs.lsu.e...ntentpage17.php

We are working hard to have shapefiles of all of our recently
published geologic maps available on our web pages.

Yours,

Paul

Paul V. Heinrich
Louisiana Geological Survey
Energy, Coast, and
Environment Building
Louisiana State University
Baton Rouge, LA 70803
http://www.lgs.lsu.e...php?sectionID=5

#2
Hans van der Maarel

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Maybe the Perry-CastaƱeda Library has some:
http://www.lib.utexa...iana/index.html
Hans van der Maarel - Cartotalk Editor
Red Geographics
Email: hans@redgeographics.com / Twitter: @redgeographics

#3
Michael Schmeling

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You could also ask your question on the MapHist Mailing List.
They have very knowledgeable people there.
Michael Schmeling
Kassel, Germany
Arid Ocean Map Illustrations
http://maps.aridocean.com
Indie Cartographer
http://www.indiecartographer.com




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