The book seems to be an author made-up list of patterns to help you remember your way to objects rather than genuine asterisms noted by deep-sky observers.
I know one of the Yahoo/Google deep-sky observer groups maintains a list of telescopic asterisms but I can't remember where. Sorry about that.
"Star Clusters" (Willmann-Bell) by Brent Archinal/Steven Hynes also has a number of asterisms listed while Archinal's "Non-existent star clusters of the NGC" (Webb Society) describes NGC objects that have turned out to be either asterisms or ghost objects. I'd also recommend checking out the SEDS web site on "The Discovery of the Deep-Sky Objects" which lists many pre-telescopic deep-sky objects, a number of which turned out to be asterisms or patches of the Milky Way. The site is at http://seds.org/messier/Xtra/history/deepskyd.html
All the best,
John
-------------------- Oscail do Shuile D'iontas na Cruinne/Open Your Eyes to the Wonder of the Universe
Bliann Idirnáisiúnta Réalteolaíochta 2009/International Year of Astronomy 2009
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