Federal Judicial Circuit, First Circuit Cases (FED1-ALL) — U.S. Supreme Court (1789-), 1st Circuit and the Judicial Panel on Multidistrict Litigation (1980-) decisions.
First Circuit Federal and State Cases (CTA1-ALL) — First Circuit, U.S. Supreme Court, Judicial Panel on Multidistrict Litigation, and state courts in ME, MA, New Hampshire, PR and RI.
U.S. Court of Appeals for the First Circuit Cases (CTA1) — First Circuit cases; includes U.S. Circuit Court of Appeals for the First Circuit Cases from 146 F.2d (1945) through quick opinions.
U.S. Court of Appeals for the First Circuit Cases Before 1945(CTA1-OLD) — U.S. Circuit Court of Appeals for the First Circuit from 47 F. (inception, 1891) through 145 F.2d (1944).