Copyright statement: Copyright restrictions applying to use or reproduction of this image are available from the Sterling Morton Library, The Morton Arboretum. For more information, please visit our ABOUT section or complete and submit this form.
Letter from Thomas L. Green describing the research work that Dr. Herman Sievering and James Crawley of Governors State University will be conducting at The Morton Arboretum and explaining that they are to be admitted to the grounds at no charge.