Canon Law: Church Documents
 

Washintgon, D.C.: Canon Law Society of America, 1917-
A series of volumes that provides official documents from the Holy Father, the offices of the Roman Curia, the USCCB, etc. that affect canon law. The arrangement is by canon. The earliest volumes (1917-1933) are located in Special Collections and must be requested from a librarian. An index has been published covering the first eleven volumes.

Paul Halsall at Fordham University provides a large selection of online sources - including documents from the early church and councils. Scroll down to the section on Law to access the links.