Abstract
The introduction deals with early posting methods—the post receiving office, which became inadequate as postal traffic increased, leading to the design of the first type of pillar letter box in 1852. A brief history follows of the different types of pillar letter boxes (illustrated) until the introduction of the type F (new square type) in 1968. A description is given of the new-type box, dealing in detail with the concept of unit construction and the rapid emptying methods used.
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