Thanks for the info Steve, this is all new to me. I am still waiting for the camera. The camera is a Seneca Camera City View. Here is a link to the ad. http://www.apug.org/forums/classifieds.php?do=showad&adid=1356&title=sold-full-plate-camera-seneca-camera-mfg-co-camera-city-view-any-interest
Everything was just fine, I was perfectly happy with my 4x5. Then I made some lens boards for Seneca view camera for a LF forum member. The edge details are more complex than most lens boards and the black lacquer was very nice on the sample board. It was down hill from there.
When I get the camera I'll make the necessary measurements and hopefully be able to find the correct holders.