10th February 2016 L = Lamp box Lamp boxes were first introduced in 1896; a small letter box designed to be attached to lamp posts in locations such as London’s affluent squares and crescents to allow late-evening posting of correspondence. Being cheap to provide they soon became the box of choice for many rural areas where the volume of posting did not justify the expense of a pillar or wall box. The Letter Box Study Group 2016-02-10T16:08:31+00:00 Lamp boxes were first introduced in 1896; a small letter box designed to be attached to lamp posts in locations such as London’s affluent squares and crescents to allow late-evening posting of correspondence. Being cheap to provide they soon became the box of choice for many rural areas where the volume of posting did not justify the expense of a pillar or wall box. http://lbsg.org/testimonials/l-lamp-box/