Signal scale plan, wax linen copy, numbered Sheet No. N9, Northern line, Balham, Trinity Road (now Tooting Bec). Last dated revision 20th September 1944.

• Physical description

  Dimensions

  Attribute	Value
  Scale	1:480

• People involved

  Role	Person(s) involved
  Commissioner	London Transport, 1944

• Associated companies, people and places

  Company

  Attribute	Value
  Company	,
  Line	Northern,