Phoenix historian and author Sylvia Lee guides monthly walking tours narrating nuggets of Arboretum history - and putting her anecdotes in perspective next to 1920s structures, and the very first trees planted here. This Fall and Winter she’s also hosting occasional slideshows, sharing vintage images projected enlarged on a big screen - a chance to get better acquainted with Col. William Boyce Thompson and his Arboretum. Sylvia’s slideshow was also arranged for history fans who are physically unable to walk the 1.5 mile main trail. During an hour in our Lecture Room, Sylvia will show images of vintage historic structures and arboretum gardens while sharing her behind-the-scenes knowledge from spending the past decade researching the history of Boyce Thompson Arboretum. Read more about arboretum history at cals.arizona.edu.