If you have an ancestry.com account you'll find the image
here
Here's the citation for it:
Ancestry.com. Washington, Marriage Records, 1865-2004 [database on-line]. Provo, UT, USA: Ancestry.com Operations, Inc., 2012.
Original data: Washington State Archives. Olympia, Washington: Washington State Archives.
That's what Ancestry.com claims as the citation, but it's incomplete.
It should also include:
"Certificate of Marriage - C.W. Lawrence & Patricia Lundeen," 10 August 1956; State of Washington, County of Skamania, No. 37528. ADDED: Book 43 (I think; might be 48), page 317
Next to the signature the bride and groom have each entered their date of birth:
CWL: 24 May 1909
Patricia Lundeen: May 17, 1938 (quite the age difference)
(Ooops, I see Betty already provided the birth dates...)