A dualogy of Christan fiction by Frank E Peretti.

Star Wars series.  Occurs 9 ABY.

A series of books that break down each book in the Bible by J Vernon McGee.

In 1967, McGee began broadcasting the Thru the Bible radio program.

A science fiction series by Andre Norton also know as the Ross Murdock series.

A series of historical fiction aimed at younger audiences by Rush Limbaugh.

A series by Harper Lee.

A science fiction series written by Harry Harrison.

An encompassing series of sub-series and stand alone books.

A four book post-apocalyptic series by Nicholas Sansbury Smith.

Part of the Kyralia Series.

A series of novels written in Japanese based loosly on ancient Chinese mythology.

A series of books written by C J Cherryh that takes place in the Alliance-Union Universe.

A subset of books set within the Uplift Universe by David Brin.

A science fiction series written by David Brin.

An all encompasing series by Mercedes Lackey including several sub-series, stand alone novels and short story collections.

The fourth the Dray Prescot series.

A series of science fiction stories written by Robert Sheckley.

A series of alternate historic fantasy by Harry Turtledove.  A subseries of the larger Videssos series.

A sub-series of science fiction novels taking place in the Commonwealth Universe by Peter F Hamilton.

A series of science fiction novels and short story collections by Lois McMaster Bujold centering around Miles Vorkosigan and his parents Cordelia and Aral.  This is the series in original publication order.

A series of science fiction novels by Daniel Young.

A series by Brandon Sanderson set within the Cosmere.

A science-fiction and fantasy cross-over series by Christopher Stasheff set in the DDT-verse.

A series in the DDT-verse.

A series of books about zombies written by Isaac Marion.

A series of science fiction books written by Jack L Chalker.  These take place in the Well World universe.

A sub-series of the Mistborn series by Brandon Sanderson.  This series takes place about 300 years after the first trilogy.

An overarching series of all Well World book by Jack L Chalker.

This is a four book series which retells the Welsh Maginogion.

Robert Jordan's epic fantasy series that was finished by Brandon Sanderson after his death.

A series of books based on the Oz books by L Frank Baum.

A duology by R M Meluch.

The eighth the Dray Prescot series.

A series of science fiction / fantasy books by Andre Norton

A series of fantasy novels originally written in Poland.  The Polish series is entitled: Saga o wiedzminie.

A dualogy by Roger Zelazney also know as the Changeling Saga.