Film of Capt. Lucas with his pack of sealyhams
http://www.britishpathe.com/record.php?id=3289
His book, Hunt and Working Terriers is well worth a read.
Another good one with info about Tommy Dobson, Willie Porter, Arthur Irving and Edmund Porter is Jill Mason's book, The Eskdale and Ennerdale Foxhounds.
Also worth looking at with info about "Badger and Butcher" and other trapped terriers is
http://www.cumbrian-lad.com/B_B2.htm