YALE COLLECTION OF WESTERN AMERICANA
Zc20 --The Mississippi-Missouri Valley
Scope
Use for materials describing
the territory purchased in 1803 from France (i.e. the area west of the
Mississippi which is drained by tributaries of the Mississippi, the continental
divide being the western boundary, the Canadian boundary the northern boundary,
and the Arkansas river the Southern boundary). Material on particular state
within this area are classed with that state. In general, material
that focuses on states adjacent to the Ohio River, to the Mississippi River,
or to the Missouri River should class in Zc 20. Zc 10 should be used
only when the scope of the material ranges beyond what I think we would
call "The Greater Mississippi Valley.
If uncertain whether to
use Zc20 or Zc10, use Zcl0.
Specific topics to be classed in Zc20 include:
Example
Murray, Charles Augustus, Sir. Travels in North America during the years 1834, 1835 & 1836, including a summer residence with the Pawnee tribe of Indians in the remote prairies of the Missouri ... , 1839.
| Zc20 | Work relating to the Mississippi-Missouri Valley |
| 839mu | Year of publication of the first edition followed by first two letters of main entry |
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