This photo is thought to be 1916 or 1917, because that is the only date which stacks up with the ages of the known people, who are: girl front left Kathleen Livingston b 1912, Boy Alec Livingston b 1911 baby, thought to be Alice Livingston born 1916. The adults are Hamilton Livingston b 1883 and Alice Livingston (nee Shipton) b 1888.