Narrow Guage Railways in America, Second Edition, (published 1876 by Howard Fleming) was reproduced in 1949 by Grahamme Hardy of Oakland, CA. The forward to the reproduction was written by none other than Lucius Beebe. I'm sure that this reproduction is long out of print.
Hardy explains that he chose the Second Edition (1896) because it includes much more detail than the First Edition (1875).
If you can find a copy of the reproduction it makes a valuable edition to any narrow guage reference library.