We did some digging and struck gold! Now in Providence:

COILS
770200 1c ABILITY TO WRITE, WAG coil of 500, line pair (24)
771000 10c REDRESS PETITION, WAG coil of 500, line pair (24)
771100 10c REDRESS PETITION, WAG coil of 3k, line pair (24)
772100 12c FREEDOM OF CONSCIENCE, WAG coil of 500, line pair (24)
772200 12c FREEDOM OF CONSCIENCE, WAG coil of 3k, line pair (24)
772500 25c FLAG/YOSEMITE, WAG coil of 500, plate number 3 (52)
772600 25c FLAG/YOSEMITE, WAG coil of 3k, plate number 3 (52)
772800 20c FIRE PUMPER, WAG coil of 3k, 9/10 line pair (24)
773000 2c LOCOMOTIVE, WAG coil of 3k, 8/10 line pair (24)
773500 5c MOTORCYCLE, WAG coil of 500, 1/2 line pair (24)
773600 5c MOTORCYCLE, WAG coil of 3k, 1/2 line pair (24)
775200 5c MILK WAGON COIL, WAG coil of 3k, 1 (52)
776700 17c ELECTRIC CAR COIL, WAG coil of 500, 1/2 line pair (24)
776800 17c ELECTRIC CAR COIL, WAG coil of 3k, 3/4 line pair (24)
778300 3c HANDCAR,coil of 500, 1/2 line pair (24)
778400 3c HANDCAR, coil of 3k, 1/2 line pair (24)
778500 14c ICE BOAT, coil of 500, 2 (52)
778600 14c ICE BOAT, WAG coil of 3k, 1/2 line pair (24)
779800 11c STUTZ BEARCAT, WAG coil of 500, 3/4 line pair (24)
779900 11c STUTZ BEARCAT, WAG coil of 3k, 3/4 line pair (24)
791500 23c LUNCH WAGON, WAG coil of 3k, 3 (48)
792300 29c FLAG/WHITE HOUSE, WAG coil of 500, 9 (48)
792400 29c FLAG/WHITE HOUSE, WAG coil of 500, 2 (48)
796300 15c TUGBOAT, WAG coil of 500, 2 (52)
796400 15c TUGBAOT, WAG coil of 3k, 1 (52)
796600 20c CABLE CAR, WAG coil of 500, 2 (48)
796700 20c CABLE CAR, WAG coil of 3k, 2 (48)

GREAT AMERICANS-strip of 20 required for plate number
101000 10c RED CLOUD, WAG pane of 100, 2 UR only
102500 25c JACK LONDON, WAG pane of 100, 2 LR only
103400 32c MILTON HERSHEY, WAG pane of 100,B1 UR only
104200 21c CHESTER CARLSON, WAG pane of 100, 1 UL only
104600 45c HARVEY CUSHING, WAG pane of 100, 1 UL only
105500 29c EARL WARREN, WAG pane of 100, S2 LR only
105600 56c JOHN HARVARD, WAG pane of 100, 1 UL only
107500 75c WENDELL WILLKIE, WAG pane of 100, 1 UR only
107900 32c CAL FARLEY, WAG pane of 100, B1 LR only
557200 50c HARRIET QUIMBY AIRMAIL, WAG pane of 50, S1111 LL only

ETC.
553100 $ 2.00 Norman Rockwell, 4-Freedom souvenir sheet