Does the Library of Congress have a sense of humour?

Just a few classification jokes for the ubernerd:

Subclass B: Philosophy (General)
Subclass BS: The Bible

Subclass T: Technology
Subclass TX: Home Economics
ex. TX370 .S63 2006
Encyclopedia of junk food and fast food / <2006>
Author: Smith, Andrew F., 1946-
Published: Westport, Conn. : Greenwood Press, 2006.
Location(s): BIOS: TX370 .S63 2006 Reserve; DREF: TX370 .S63 2006 Directories;
Electronic Location(s):
Table of contents http://www.loc.gov/catdir/toc/ecip0612/2006012113.html

Notice the Encyclopedia or Junk Food and Fast Food is TX--Texas. Hmmmmm????