This is an email I received from from the WSC V.P. of Conservation

When Larry and I started developing the individual river graphs, we looked for all the wild fish run data. The trouble is that they didn't separate the hatchery from the wild fish until about 1978, which is when our charts begin.

WDFW has done the longer term trends of the combined hatchery and wild., but I am not sure which publication they are in. you can probably find them in one of the annual salmonid reports or in the annual landings reports. I'm not sure just how far back they go, but I think through 40 to 50 years. I do have those reports, and will search them when I get time (right now I'm pretty busy working on the house).

Hatchery fish began making significant contributions to the total catch in about --as I remember from talking to Gibbons--about the late 1950's and early 1969's. So before that time, I think most of the totals were wild. When I did the estimate of catch in the mid-1950's for the WSC Fact Sheet, I talked to Bob and from that discussion, discounted the annual runs 40% for their stated overestimate of the real catch and 10% for the hatchery fish. The early numbers were apparently overestimates due to their method of calculating and estimating the total. At least that is what I was told and have no reason to doubt Bob on this.