I must cite two references on which I based my work.  The first is actually a book, rather than a web link:

Skyguide, A Field Guide to the Heavens, by Mark R. Chartrand III, Golden Press New York, Copyright 1982, by Western Publishing Company.

This is an excellent reference that describes the fundamentals of sky-gazing, defines the attributes of stars and the celestial sphere, and illustrates each constellation.

My other essential reference supplied the actual data by which I generated the asterisms (The Bright Star Catalog, 5th Edition, by Dorrit Hoffleit and Wayne H. Warren).  They have an on-line catalog of the 9000+ brightest sky objects at: