![More Mass Observation: Humphrey Spender, From directive Worktown, Street, 1937](http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2013/7/19/1374242384080/Humphrey-Spender-From-dir-008.jpg)
Photograph: Humphrey Spender/Courtesy of the Mass Observation Archive
![More Mass Observation: Children hanging around by Humphrey Spender](http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2013/7/19/1374242378484/Children-hanging-around-b-006.jpg)
Photograph: Humphrey Spender/Courtesy of the Humphrey Spender Archive/Bolton Council
![Mass Observation : Humphrey Spender, People on Bench](http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2013/7/19/1374238395885/Humphrey-Spender-People-o-002.jpg)
![More Mass Observation: Humphrey Spender, Crowds, Blackpool, 1937](http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2013/7/19/1374242375767/Humphrey-Spender-Crowds-B-005.jpg)
Photograph: Humphrey Spender/Collection of Bolton Library and Museum Services
![More Mass Observation: Humphrey Spender, Library Reading Room, April 1937](http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2013/7/19/1374242368325/Humphrey-Spender-Library--002.jpg)
![More Mass Observation: John Hinde, From Exmoor Village, 1947](http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2013/7/19/1374242373654/John-Hinde-From-Exmoor-Vi-004.jpg)
Photograph: John Hinde/Courtesy of The National Media Museum
![More Mass Observation: John Hinde, From British Circus Life, 1948](http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2013/7/19/1374242366495/John-Hinde-From-British-C-001.jpg)
Photograph: John Hinde/Courtesy of The National Media Museum John Hinde
![Mass Observation : John Hinde, From Exmoor Village, 1947](http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2013/7/19/1374238391539/-John-Hinde-From-Exmoor-V-001.jpg)
Photograph: Courtesy of the National Media Museum
![Mass Observation: Micheal Wickham, from Britain Revisited, 1960](http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2013/7/19/1374238400351/Micheal-Wickham-from-Brit-004-thumb-7373.jpg)
![Mass Observation : Taken From The Garden and Gardening, 1998](http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2013/7/19/1374238402783/Taken-From-The-Garden-and-005.jpg)
Photograph: With permission of Curtis Brown Group
![Mass Observation : Taken From Images of Where You Live Cities, Towns, Villages 1995](http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2013/7/19/1374238404740/Taken-From-Images-of-Wher-006.jpg)
![Mass Observation : Taken From You and Gardens, 2007](http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2013/7/19/1374238407504/Taken-From-You-and-Garden-007.jpg)