Self-Sealing Envelopes Used Poison? #history #shorts
1 month ago
16
The self-sealing envelope once contained arsenic — disguised as sweetness. Safety only came after harm was proven. History isn’t just wars — it’s everyday objects that shaped modern life.
#history #shorts #envelope #victorian #postal #toxic #consumer
Toxic Adhesives in 19th Century Mail, British Postal Museum, 1845
https://postalheritage.org.uk
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