Kalmbach Publishing Co
Book

How To Build Realistic Model Railroad Scenery, 3rd Edition
Walthers Part # 400-12216, p. 948 Walthers 2012 HO Scale Reference
A scale, $24.95, currently in stock at Walthers

 
Now in its third edition, this book by noted modeler and scenery expert Dave Frary provides valuable information about adding everything from forests to track ballast to your layout or modules. Its a must-have for your railroad library and also makes a great gift for fellow model railroaders.