According to my unscientific and highly biased survey of posts, (a.k.a. what I remember from reading) Most people just make a trip out it and fetch them up. Of course Wash. to Ohio is quite a trip.
Uship has been mentioned previously. Google or browse "Freight Broker" and/or "Load Broker". Once you sort through the myriad of How to make a bazillion dollars from home as a freight broker there are legit brokerages and freight companies advertized. If you drive the interstates much some of the names you will recognize. How ever you do it you'll need some basic info like dimensions, weight, where it is, is it accessible by semi, van trailer and so on.
Another avenue to explore are the specialty RV transporters. I mention this as Washington/Oregon/BC and Indiana are RV manufacturing hubs. You may get lucky with one looking to book a back haul or front haul.
Good luck with your quest.