By A Mystery Man Writer
National Records of Scotland
Victorian 'Vinegar' Valentines - Zoë Cashman
Call me unromantic, but Valentine's Day is grossly commercialised, Alexander Chancellor
From 'vinegar valentines' to human hair: The surprising history of valentine cards - Who Do You Think You Are Magazine
Intimate expressions': 500 years of notable love letters to go on display, National Archives
The Origins of Valentine's Day
Valentine's Day: Origin and Meaning - AC Silver
The History of Valentines Day & Traditions
83 Victorian Valentine Stock Photos, High-Res Pictures, and Images - Getty Images
Valentine's Day in the Victorian Era – 5-Minute History
A Victorian Valentine National Records of Scotland
How we work Manchester Metropolitan University