Ink Trivia Government Ink

Question: What ink formula is the standard for use in the United States Post Office?Answer: 11.7 grams of tannic acid, 3.8 grams of gallic acid crystals, 15 grams of ferrous sulphate crystals, 12...

Ink Trivia

Question: What is the oldest ink-written postcard?Answer: The oldest ink-written postcard is dated 1840 and was discovered in 2002. It was penned by an English gentleman who sent it to himself. Pr...

Postcards: A wonderful way to keep in touch without a timely commitment

The Ingenious Postcards The first postcard was issued by the United States Post Office Department on May 13, 1873. The marks for mailing on the card depicted the bust of Liberty and a circle with...