||Boston: Arthur P. Schmidt & Co., 1883. Plates 380 - 382.
||Original scans: 400dpi, black and white, losslessly-compressed tif files around 4600 by 5700 pixels. Cleaned up, deskewed, re-sampled to 600dpi.
Henry W. Dunham poss. a typo for Henry M. (Morton) Dunham, a friend of Chadwick's, who dedicated his first organ sonata to the latter? (Schissel)