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Title: More about the history
Review: I was looking for a reference guide for the signals at the tracks near my house. This book gave me a basic idea (I guess there are too many configurations/railroad) but most of the book covered the early history of signaling. Interesting, but I wanted more of a recent 'field guide' type book. I have 7 signals to look at within a mile bike ride of my house and I still cant figure out 5 of them!
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