Re: 1957-1961 Fake Stack Questions

Greg -
have you looked at the online images at photoswest.org? Search on "473," "476" and "478" and you can see how the engines changed through the years. You may even find photos of some of the trips for which you have film.
And I posted something about the stacks recently when I reposted Earl's "when did it last run?" list a few weeks ago - check that.
473 got a balloon stack in 1950 for the Bumblebee paint scheme.
It appears to me from photos that that same stack was put on 476, which also got the fake headlight box. This was apparently done in early 1954, when 476 was renumbered "7" for a movie.
(There are no photos of 477 online there from October 1951 until May 1954. 476 may have been in the shop.)
476 got a DIFFERENT headlight for "Night Passage" in 1956, and the working headlight was mounted down on the pilot beam to accomodate the fake. (Weird looking.)
So 476 had one fake stack or another from 1954 to 1980.
473: a fake stack during the Bumblebee paint job. When it returned to service in 1952, it did NOT have the fake stack. The first shots of it at photoswest.org with a fake stack are 1959 (no shots of 473 from September 1953 to May 1959.)
478: first shots with fake stack in May 1960. (Wasn't 478 the yard switcher until 1960? That would make sense.)
JAC