Columbia subject headings:
Hockley, Frederick, 1808-1885--Correspondence.
Occultism--England--Early works to 1900.
Harvard subject headings:
Hockley, Frederick, 1808-1885.
Occultism--Early works to 1900
Rosicrucians--Correspondence.
Princeton subject headings:
Hockley, Frederick, 1808-1885--Correspondence.
Occultism--England--Early works to 1900.