Not a crime story, but I liked this Valentine’s story from 1871, so thought I’d share it:

“On the evening before St Valentine’s Day, there was an immense increase of labour in the inland branch of the Post Office, which was met partly by the employment of an extra number of men and partly by extra exertion of the regular hands, who were paid an additional shilling for coming an hour earlier than their usual time.

“The ordinary force of 350 sorters was made up to 500, by the enlistment of men who were off duty in their own right, and of others from the Dead Letter Office.

“The number of valentines despatched on Monday evening from the General Post Office was 250,000 more were received the same night and on the morning of St Valentine’s Day, for despatch by the day mails.”

The Derby Mercury, 22 February 1871 (who in turn had lifted their story from the Globe).