Traffic circular; Supplement to Traffic Circular No: 26 issue: 16th July 1979.

• Physical description

  Dimensions

  Attribute	Value
  Height	244Mm
  Width	186Mm

  Colour

  Attribute	Value
  Colour	Yellow

  Item content

  Attribute	Value
  Text	Revised Signalling Arrangement. Hampstead - Camden Town

• People involved

  Role	Person(s) involved
  Printer	Waterlow London 52428,
  Publisher	, 1979

• Associated companies, people and places

  Company

  Attribute	Value
  Line	Northern line, July 1979.