From the back cover:
A complete Ghostbusters International roleplaying game supplement.
Now YOU can read the very tales that titillated the Western Hemisphere! Thanks to the determination, courage and incredible unselfishness of the staff at Ghostbusters International, this all-but-forgotten diamond in the gem-fields of the occult has been reprinted and is once more a best-seller! An invaluable reference aid, Tobin's Spirit Guide details sites, sightings and situations on nearly every continent. Tobin includes accurate case histories and essential essays on the nature of spirit encounters. Better still, he tells you how to guard against, ward off, even vanquish forever dozens of ghostly apparitions and spectral horrors.
Browse it, study it, stash it by your phone for emergency reference (You Know Who To Call) but DON'T tuck Tobin's Spirit Guide under your bed -- you never know what else may be hiding under there!
Tobin's Spirit Guide includes:
All-new introduction by Dr. Raymond Stantz, famed Ghostbuster and paranormologist
Index of Spooks, Spirits and Specters
Original woodcut illustrations from the 1920's edition
Complete and up-to-date statistics on every shade and haunting for use with the Ghostbusters International roleplaying game