Xi Sigma Pi is the oldest and largest forestry honorary society in the United States with 42 active chapters and more than 24,000 members. It promotes and awards high scholastic achievement in the profession of forestry. Membership in the society requires, in additin to high scholastic marks, that the individual display qualitites of leadership and good character.
"XI SIGMA Pl,"
Ames Forester: Vol. 81
, Article 8.
Available at: https://lib.dr.iastate.edu/amesforester/vol81/iss1/8