The maps are inserted on fold-out sheets at the rear of each volume.

Fifth state of the slipcase.

Available 1960 to 1961.
Price 63s.

The number of sets produced is uncertain, but was probably less than 1,000.

Boxed in three batches[?]:

December[?] 1960
February[?] 1961
April[?] 1961

Slipcases manufactured by Jarrold & Sons.

Covered with grey textured paper.
No price printed on label.
One piece construction.
Staples in top and bottom panels.
Join running down centre of top and bottom panels.

Includes various impressions 1960-61:

FR - 9th or 10th Impressions
TT - 7th Impressions
RK - 6th or 7th Impressions

The 9th Impression 1960 of FR misidentifies itself as the 8th Impression 1960.