There are nine architectural plans in this series.  The first seven, dated 3/4/1916, cover the ground floor of Customs House, floors 1-5 and the caretaker's residence.  The last two, dated 16/7/1934 and created by George Oakeshott, Works Director, NSW, are plans of the second and fourth floors.
 
These items are part of the Australian Customs Service Historical Collection identified as accession numbers NSW 00001 (for the earlier plans) and NSW 00002 (for the later ones) on the Collection's inventory database.