my photographers section (http://www.isle-of-man.com/manxnotebook/tourism/pgrphrs/pgrhrs.htm) only covers up to c.1900 - many did continue but I did not research this period (possibly I should do 1900-1918 as 1918 is about my approximate cut off date) - the Manx museum list includes some later names (tho is not as comphrensive pre 1900)