The story was set years later than the events in the ongoing series.

The first of these was published as an ongoing series from 1955 to 1983.

The first of these two, intended to be an ongoing series, was published from late 1996 to mid-1998.

Unlike most for her other works, this novel is not part of an ongoing series and isn't set in the present day.

It was followed up in March 1996 with an ongoing series that lasted 15 issues.

The line ultimately grew to six ongoing series before ending.

Letter 44 is an ongoing series, the first issue of which will debut in October 2013.

The quartet is part of what he hopes will be an ongoing series.

Zero Hour also served to launch or end several ongoing series.

Since then, the still ongoing series has aired over 595 episodes.