fredthebear: Art of Attack in Chess by Vladimir Vukovic, the 2003 algebraic reprint by Everyman Chess briefly describes the Pillsbury's Mate pattern with the rook sacrifice on the g-file on page 76. This game features Pillsbury's Mate, but a queen is substituting for a bishop on the diagonal.
Pillsbury's Mate uses both rooks; one is sacrificed on the back rank during the discovered double check and the second rook slides over to give mate on the open g-file. The two "ll" in Pillsbury can help the reader to remember the two rooks on the g-file. The last rook gives the final check in Pillsbury's Mate.
Pillsbury's Mate is often confused with the two versions of Morphy's Mate (p. 71-72 in Vukovic's algebraic reprint). Morphy's Mate uses only 1 rook coordinating with the bishop. The bishop will give the final check.
The original version of Morphy's Mate applied a queen sacrifice to eliminate a minor piece defender on f3/f6 and the g-pawn recaptures the queen to open the file. The rook gives check on the newly opened g-file, and then the bishop captured the former g-pawn now on f3/f6 for mate. The Concealed version of Morphy's Mate does not require the queen's help. The Concealed version uses a windmill discovered check, as the exposed king is forced in and out of the corner. The rook will capture the g-pawn w/check, then the f-pawn so it cannot interpose, and then return to the g-file w/check, and finally drops back along the g-file allowing another discovered check by the bishop. In either case, it's the bishop that gives the final check in Morphy's Mate.