Bibliografi : hlm. 257-269
No Inv.: 1232-1236/P/Perp/95/5c~3701-3705/P/Perp/96/5c~1054-1063/P/Perp/96/10c~1951-1960/P/Perp/95/10c~13281-13285/P/Perp/94/5c~2086-2095/P/Perp/98/5c~111209/S/Perp/07/1c~128212/PH/Perp/10/1c~14074…
Termasuk bibliografi
No Inv.: 131591/S/Perp/12/1c
No Inv.: 198-199/Perp/89/2c
Jilid 1 : "The Rise of the Middle Classes", jilid 2 : "The Rise of the Working Classess", jilid 3 : "A Century of Social Reform", jilid 4 : "The Age of Affluence"
No Inv.: 344/PN/Perp/88/1c