Efficiency acquired by crystal gazing
Subtitle: a treatise on the science of concentration
By: by the world renowned Zancigs.
Contributors: Zancig, Agnes.; Harry Houdini Collection (Library of Congress)
Publisher: Published by the Zancigs
Published: 1920
Place of publication: Asbury Park, N. J
Language: eng
Number of pages: 32
Subjects: Crystal gazing.; Attention.
Other titles: Unseen World Company; Crystal gazing
Notes: With: Barrett, Francis. [Magus. Selections] Instructions for using the crystal. [S.l., between 1900 and 1927?]  Issued separately.