BPRD: Hollow Earth [B.P.R.D.: Hollow Earth] (2002, Dark Horse)

BPRD: Hollow Earth [B.P.R.D.: Hollow Earth] ran for 3 issues (2002–2002). Publishing format: Limited Series. Next B.P.R.D. title is the one-shot B.P.R.D. The Soul of Venice (Dark Horse, 2003 series) [sic; no colon]. Starting with B.P.R.D.: The Dead (Dark Horse, 2004 series) #1, inside front covers of B.P.R.D. one-shots and miniseries will include the note "Number X in a Series" counting from first issue of this miniseries. First B.P.R.D. title and first in-continuity Hellboy spinoff since the one-shot Abe Sapien: Drums of the Dead (Dark Horse, 1998 series). Picks up from the events of Hellboy: Conqueror Worm (Dark Horse, 2001 series). Indicia of this miniseries and that of first collected edition, BPRD: Hollow Earth and Other Stories (Dark Horse, 2003 series), lack periods in "BPRD". All subsequent one-shots and miniseries consistently read "B.P.R.D.".