These helpful instructions were posted to another email list. Thought
they might be of use to some of you looking for references AND for folks
not aware of this information available on the LDS site.
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Start at the LDS family search page
http://www.familysearch.org/
On the right it has a column titled "Family History Library
System" with a picture of a building. That column has four
links. Click on the one that says "Search the Family History
Library Catalog for records and resources." The next page will
have a column of blue buttons on the right. Click the one on
the top of the column that says "Place Search." The next page
will have two blanks. Say, for example, you want information on
ancestors that lived in Johnson Co, IN. For Place, you would put
Johnson. For Part Of, you would put Indiana. Don't abbreviate the
state name.
The next screen will contain the matching places. There may be several
matches, depending on where you're looking for. In these matches, the
first word refers to the state you input; the second word, the county.
The desired match for the example here would be the one "Indiana,
Johnson." Click on "Indiana, Johnson." It will pull up the list of
microfilm(s) that the LDS has on that area.
Hope this is clear.
Heather