-------- Original Message --------
Subject: RE: A map of a different color...
Date: Mon, 20 May 2013 17:16:07 -0400
From: Coltman, Ted <[log in to unmask]>
To: Maps, Air Photo, GIS Forum - Map Librarianship <[log in to unmask]>


It's a color separation layer, one of three (blue, yellow and pink). The
three color separation layers are used in combination to create the four
colors needed for the land areas, plus blue for bodies of water.

All the states that are blue in this separation layer are either green
(blue + yellow) or purple (blue + pink) in the final map. The bodies of
water that are blue in this separation layer remain blue in the final map.

Similarly, if you had the yellow separation, all the states (plus Canada
and Mexico) appearing in yellow would, in the final map, be either
yellow (no other color added), green (blue + yellow) or orange (pink +
yellow).

-------------------------------------------------
Edward (Ted) Coltman
Corporation for Public Broadcasting
401 Ninth Street NW
Washington DC 20004-2128
vox +1 202 879 9670
e-mail [log in to unmask]
-------------------------------------------------


-----Original Message-----
From: Maps, Air Photo, GIS Forum - Map Librarianship
[mailto:[log in to unmask]] On Behalf Of Angie Cope, American
Geographical Society Library, UW Milwaukee
Sent: Monday, May 20, 2013 4:55 PM
To: [log in to unmask]
Subject: A map of a different color...

Two jpegs attached. Contact Jennifer if you have difficulty viewing them.


-------- Original Message --------
Subject: A map of a different color...
Date: Mon, 20 May 2013 20:19:50 +0000
From: Farrington,Jennifer J <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>

A patron has asked what the blue color (see" BlueVersion" attachment)
means in his version of this map:

Author, etc.:                American Map Corporation
Title:                       United States with highways
                                      American Map Corporation.
Scale:                       Scale [ca. 1:4,000,000] (W 126°--W 66°/N
50°--N 24°).
Published:                   [New York] : American Map Corporation, c1986.
Description:                 1 map : col., plastic coated ; 82 x 121 cm.
Alternate title:              Colorprint United States with highways.
Notes:                        Includes insets of Alaska, Hawaii, and 14
major metropolitan areas.
                                       At head of title: Colorprint.
                                       "Map No. 9578."
Subjects, general:         Roads -- United States -- Maps
                                        United States -- Maps
Subjects,geog(maps):   Roads -- United States -- 1986 -- 1:4,000,000 -- FU
                                       United States -- 1986 --
1:4,000,000 -- FU
                                       United States -- Roads -- 1986 --
1:4,000,000 -- FU
Format:                               Map
OCLC:                           15307837


The map in our collection is colored similarly to the "ColorVersion"
example (this is an example to show coloring only, and is not the map in
question). The map I have in hand and the patron's map both have a 1986
copyright and have "Map No. 9578" in the lower right-hand corner. They
appear to be the same in most every way except color. Any ideas on what
the blue represents in my patron's map?

Thank you,
Jennifer Farrington
Senior Archivist
Map & Imagery Library
University of Florida
(352) 273-2825