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The 2006 series of Wolverine: Origins are collected in a 5-volume series of Wolverine Origins books (Wolverine Origins 2007 series), three titled volumes and two crosssover collections:
#1-5 are collected in Wolverine Origins vol. 1 - Born in Blood
#6-10 are collected in Wolverine Origins vol. 2 - Savior
#11-15 are collected in Wolverine Origins vol. 3 - Swift and Terrible
#16-20 are collected in Wolverine Origins vol. 4 - Our War along with Annual #1
#21-27 are collected in Wolverine Origins vol. 5 - Deadpool
#28-30 are included in X-Men: Original Sin along with material from X-Men: Original Sin one-shot (2008) and X-Men: Legacy (2008 series) #217-218
#31-36 are collected in Wolverine Origins: Dark Reign
#37-40 are collected in Wolverine Origins: Romulus
#41-45 are collected in Wolverine Origins: Seven the Hard Way
#46-50 are included in Wolverine: The Reckoning along with Dark Wolverine #85-87.