There is no stamp on the trusses indicating the truss manufacturer. The house was built in the 60s. Earthquakes are an issue but are not common in this area, and there are no consistent high winds. This is probably why the roof looks as good as it does.
I'd venture to guess there are...
I have a ranch house with 'W' roof trusses which were cut away by a previous owner. The middle two members that meet with the roof rafters at the peak of the roof were cut off and in some cases "replaced" with verticle members from the bottom two joints of the W up to the roof...
