Whiteboard
Whiteboards became commercially available in the early 1960s, but did not become widely used until 30 years later. Early whiteboards needed to be wiped with a damp cloth and markers had a tendency to leave marks behind, even after erasing the board. Dry-erase markers for whiteboards were invented in 1975.
The Mansion of Happiness
The distinction of "the first published American board game" however is awarded today to "The Travellers' Tour Through the United States" published by New York book sellers F. & R. Lockwood in 1822. Because printing of game boards was more difficult in 1822 than 1843, the term mass market is a gray area. In 1822 reversed etched copper plates were used to print game boards. After the first 2,000 impressions, breaks quickly appeared in lines. Games were so expensive, the people who could afford them did not want game boards they could not read. By 1843, lithography with water color painting was popular. Lithography could easily produce 40,000 perfect impressions.