Where can I find information on painting and finishing wood products?

• The USDA Forest Products Lab has a publication called the Wood Handbook that contains information regarding finishes for wood products. here's is a link to the website where you can view this information online:
  
  http://www.fpl.fs.fed.us/documnts/fplgtr/fplgtr113/fplgtr113.htm
  
  Chapters 14 and 15 may provide information specific to your needs. Here's the TOC for those chapters.
  
  Chapter 14 Wood Preservation (PDF 1.2 MB)
  
  Wood Preservatives
  Preservative Effectiveness
  Effect of Species on Penetration
  Preparation of Timber for Treatment
  Application of Preservatives
  Handling and Seasoning of Timber After Treatment
  Quality Assurance for Treated Wood
  
  Chapter 15 Finishing of Wood (PDF 2.2 MB)
  
  Factors Affecting Finish Performance
  Control of Water or Moisture in Wood
  Types of Exterior Wood Finishes
  Application of Wood Finishes
  Finish Failure or Discoloration
  Finishing of Interior Wood
  Finishes for Items Used for Food
  Wood Cleaners and Brighteners
  Paint Strippers
  Lead-Based Paint
  
  
  The Forest Products Society also publishes a document called:
  
  Building An Industrial Wood Finish
  
  The information contained in this manual has been gleaned from the experiences of the author collected during more than 30 years as a supplier of wood finishes to manufacturers of finished wood products and as a consultant to the industry. The purpose of the manual is to help manufacturers gain a full understanding of all of the factors that impact the quality, durability, cost, and environmental impact of finished wood products. Four chapters cover: Finishing Products – multiple-step wood furniture finishes, kitchen cabinet and office furniture finishes, specialty wood finishes, and waterborne/water-based finishes; Executing the Wood Finish – wood finish application hardware options, examples of wood finishing manufacturing lines, and transfer efficiency and calculation of wood finish costs; Wood Finishes and the Environment – legal and regulatory issues and pollution prevention opportunities through hardware and finish product improvements; and Quality Control – white room wood preparation, wood finish variables and recommendations, finish inconsistencies/troubleshooting, the importance of lighting, and analyzing rejected pieces
  
  Publication #7247 (1 lbs)
  
  it's available through their website at
  
  http://forestprod.org/mycart/index.php?categoryID=11