References

  • Chemical Heritage Foundation
  • Colorado State University, Avenir Museum of Design & Merchandising
  • JFK Presidential Library and Museum
  • Lincoln Library & Museum
  • Amparo Museum
  • Southern Ute Cultural Center
  • Smithsonian Institution
  • University of Arizona, National Tree Ring Laboratory & Museum


  • State Historical Society of North Dakota
  • NEON, Inc.
  • Enviro Science
  • Carnegie Museum of Natural History
  • Central Michigan Herbarium
  • City of Aurora
  • Valdosta State University
  • CARMABI Foundation