George W. Hilton, The Truck System, including a History of the British Truck Acts, 1465-1960, W. Heffer and Sons, Ltd., Cambridge, 1960.
Hance D. Smith, Introduction (to facsimile reprint of the Report of the Commissioners appointed to enquire into the Truck System (Shetland), Sandwick, 1978.
Hance D. Smith, Shetland Life and Trade, 1550-1914, John Donald Publishers Ltd., Edinburgh, 1984, ISBN 0859761037.
For further queries, contact Shetland.archives@sic.shetland.gov.uk.
NOTES 2.
The original documents come in a double column, small print format. Since it isn't possible, or even desirable to reproduce that here, some alterations have been made. Page numbers are indicated within square brackets - [Page x]. Tables, which were in even smaller print, have also been altered somewhat where necessary. In particular, Table I-IV