Meek Company, England, machine-made
lace paper Valentine, elaborately embellished
(circa 1850)
Nancy Rosin, A Victorian Treasury: The Valentine Resource
Eve M. Kahn, “Three Centuries of Valentines Offer 12,000 Ways to Say ‘I Love You'”, New York Times, 13 February 2018
Nancy Rosin, “Antique Papercuts and the Modern Valentine: The Fingerprints of Love” (self-published, 2007)