I spent a good deal of time searching and playing on the Western States Marriage website at http://abish.byui.edu/specialCollections/westernstates/Search.cfm. I luckily located marriage records for folks in the database that I previously had no evidence of marriage dates. The website also gives the location of the marriage records so they have been added to my to-do list to send for.
The BYU Idaho marriage database includes pre-1900 marriages for Arizona, Idaho, and Nevada. Some counties include records up until the 1930's and later. A good deal of marriages are from California, western Colorado, Montana, Oregon, Utah, eastern Washington and Wyoming. Early marriages (1700's) from New Mexico are currently being added.
A groom search for the surname of Poundstone yielded marriage records from 1865, 1946, 1982, 1992, and 2004. I received confirmation on numerous Potter, Howe and Wakely marriages. I found a total of 32 marriage dates and references to where each original record is located. All for free, what a gonga!