Janette, you probably found a search result from an index that Ancestry.com acquired from the LDS' Family History Library. Ancestry.com recently acquired quite a few such indexes. Ancestry lists the source as the FHL microfilm number such and such.
As stated by another, the actual microfilms are listed in the FHL Library Catalog. The LDS' Historical Records site has the same indexes, and as also already noted, many of the actual images are also posted on that site:https://www.familysearch.org
If you are looking at WV items, the images are at the WV Archives vital records site:http://www.wvculture.org/vrr/va_select.aspx
--except for post-1970 death records.