Hi All,
I have been thinking of writing this post for several months. Ed R's mention of John Armstrong's book got me moving.
I have no financial interest in any of the publishers mentioned below so I have nothing to gain because of this post.
I consider the first two "must haves".
1) Track Planning for Realistic Operation by John Armstrong (Kalmbach Publishing Co.).
2) Trackwork Handbook for Model Railroads by Paul Mallery (Carstens Publications, Inc.).
I consider the next two very helpful.
3) Creative Layout Design by John Armstrong (Kalmbach Publishing Co.).
4) Realistic Model Railroad Operation by Tony Koester (Kalmbach Publishing Co.).
Others may have their favorites to add to this list.
Regards,
Ed