Where can I find technical papers on Timber Retaining Walls?

• 1. Designing Retaining Walls, Bulkheads and Seawalls of Treated Timber. Author: American Wood Preservers Institute, 1966
  
  2. Earth Retaining Structures. Author: W.D. Keeney, AWPI
  
  3. Improved Standard Designs Pressure-Treated Timber Crib Walls. AWPI, 1969.
  
  Available upon e-mail request from the AWC Help Desk.