I would like to obtain obits for Jacob Cash and his wife, Eliza (Westman) Cash.
They are buried in Oakesdale Cemetery and the dates of death are:
Eliza 17 Apr 1899 and Jacob 10 Jan 1912. Their dtr, Caroline B. married
Primus W. Burns and they, too, are in the Oakesdale Cem.

I appreciate any help that can be given.

Obituaries were not as popular as today, nor written in the same manner. They were more of a death notice than what we would call an obit.

But...give it a try:
With the "demise?" of the Random Acts of Genealogical Kindness, someone here might obtain the obit for you, otherwise:
The Washington State Library has a free research service, the ask-a-librarian program, where they will look for information in the archives, in this case the newspaper microfilm for an event. They will look up to an hour and send you the results. For an obituary: http://www.sos.wa.gov/library/Obituaries.aspx
Due to staff cuts, economy, mass requests, they are now taking up to six weeks.

Thank you so very much for all of the info. It is VERY helpful and I will
follow through.
Pam