Did the next pictures in 8 Squadron's archive feature Shackletons?
From memory, the DH9As were pictured at a remote landing ground on Perim Island in 1928(ish). Perim stands in the Red Sea near Aden. 8 Sqn spent from 1921 to1971 in the Middle East (with the exception of a few months flying Liberators from Ceylon at the end of WW2). The Shacks came on the return to the UK at Kinloss in '71. Therefore there are lots of pictures between DH9A and Shackleton.
For more good pictures etc, visit the 8 Sqn website and click onto the history button. You will find out why the Sqn has an arab dagger on its badge and why it is known as "Aden's Own".
8 Squadron Home Page
Perhaps it is getting time for the "are there any good Squadron Websites out there" thread to be opened.