Signal scale plan, wax linen copy, numbered Sheet No. N32, Northern line, Burnt Oak last dated revision 14th June 1939.

• Physical description

  Dimensions

  Attribute	Value
  Scale	1:480

• People involved

  Role	Person(s) involved
  Commissioner	Great Northern City Line, 1939

• Associated companies, people and places

  Company

  Attribute	Value
  Line	Northern,