Search terms: Walpurgisnacht German witch sabbath Harz mountain

Season of the WitchWalpurgisnacht in Germany's Harz Mountains
Steenie Harvey

Halloween
Ruth Reichmann
Max Kade German-American Center
Indiana Univ.-Purdue Univ. Indianapolis

WITCHES (hexen)
Ruth Reichmann
Max Kade German-American Center
Indiana Univ.-Purdue Univ. Indianapolis

Walburga, Saint   
Columbia Encyclopedia, Sixth Edition, Copyright (c) 2005.

The Lure of the Witch
by Dawn Work-MaKinne

Sabbats
Guiley, Rosemary Ellen.
The Encyclopedia of Witches and Witchcraft.
New York: Facts On File, 1989 [ISBN 0-8160-2268-2]