American Association of Variable Star Observers
For many years, Phoebe was an observer, volunteer and benefactor of the American Association of Variable Star Observers (AAVSO). The AAVSO, founded in 1911, was an organization which fostered collaboration between citizen scientists and professionals. John Crane willed his 4-inch Clark refractor to the AAVSO. After he died in 1927, Phoebe Waterman Haas was able to obtain it. She reported her observations of variable stars to the American Association of Variable Star Observers (AAVSO), submitting 338 observations from 1928 to 1933. She also taught her children and friends about astronomy.