The Harper Hall Trilogy was created in 1984-07.
The Harper Hall Trilogy has 500 pages.
The ISBN of The Harper Hall Trilogy is 1-56865-017-5.
The Beaver Trilogy was created in 2001.
Gorse Trilogy was created in 1953.
Cairo Trilogy was created in 1956.
Larklight trilogy was created in 2006.
The Trilogy - album - was created in 2004.
U.S.A. trilogy was created in 1930.
Prehysteria trilogy was created in 1993.
Undersea Trilogy was created in 1992.
The Corellian Trilogy was created in 1995.
Viking Trilogy was created in 1957.