'NB images 1 - 38 in this album are not Gillen's; they are photographs taken during the 1891 - 2 Elder Exploration Expedition (AA 85).' PG Jones 2002' (AA 656)
The AP number is a former accessioning system which has been superceded.
Annotated images are cited in the description in quotation marks. Some images are duplicated in other albums.