Where can I find information on Lumber Grade Rules and Grade Stamps?

• The most recent information on grade rules and grade stamps can be obtained from The American Lumber Standards Committee (ALSC), Incorporated website for untreated and treated lumber. These links give access to facsimile lists of ALSC-certified grading rules, accredited agencies and sample grade stamps. ALSC can be reached via email at alsc@alsc.org or 301-972-1700.