I hope the moderator won't feel this is too far off the topic, but thinking of nighttime photos reminded me of the RR night shot to end all RR night shots, taken at Horseshoe Curve in 1954. It had two PRR freights plus the Pennsy's westbound passenger train Trailblazer on the curve. It was used in an ad campaign for Sylvania flash bulbs (remember those, anybody?) and I THINK, not positive, that it was taken by the Burns Brothers, commercial photogs in Schenectady NY. Anyway, no less than 6,000 Sylvania flash bulbs were fired off for the shot. The Burns boys did several other nighttime spectaculars for Sylvania in that campaign, always chosen because they involved huge quantities of Sylvania bulbs. To my knowledge none of the three brothers was a rail fan, but they did do several assignments for Alco during my time there 1953-1960.