Dedicated to Sharing the Heritage of Redwood Empire Railroading
From http://sphts.org/convention/ there is, in part:
"This year, we will hold a joint convention with the Northwestern Pacific Railroad Historical Society. Can you guess what the theme will be? You guessed it, the focus will be on the NWP and the railroads which interchanged with it. Our convention hosts are Charlie Siebenthal and Angelo Figone."