Quoted from pinwiztom:
The Pacific Pinball Museum in Alameda CA has probably one of the most vast EM collections,
with tons of early 60s WMS EMs, Along with tons of Woodrails and GTB and BLY EMs)
That is in part due to the fact that 60s WMS pins were my favorite to acquire and collect and play.
At one time I had about 75 of the 170 WMS EMs from 1960-1978 eras
and I have since donated the vast majority of my collection to the PPM.
Including all the WMS reverse wedgehead pins ever produced.
And what games that I did not donate, of WMS EMs from 1960-78 eras,
they acquired the remaining (about 90% of WMS EM pins) thru other donors.
Another great place to play WMS EMs from the 60s & 70s is at Matt Cristiano's Pinball Ranch in San Benito county CA
where he has a bunch, most of those from the Sam Harvey acquired collection.
You now have me wanting to compare the games linked in this topic with the games listed for the Pacific Museum here on Pinside. Wish I had a visit to the West Coast coming up soon.