Which dictionary's innovative marketing campaign in the 1960s revolutionized reference book sales by being the first to be directly marketed to American households through mail-order subscriptions?

Dictionaries might seem like ordinary reference books, but they represent some of the most significant retail products in linguistic history. Behind these scholarly tomes are fascinating business stories of marketing innovation, sales strategies, and visionary leadership. This trivia question explores a pivotal moment in dictionary retail history that transformed how language reference materials were sold to the public.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

The American Heritage Dictionary (1969)
Webster's Third New International Dictionary (1961)
Random House Dictionary of the English Language (1966)
The Oxford English Dictionary Compact Edition (1971)