Mary Bellis

  • Film producer and director


Mary Bellis was a former writer for ThoughtCo. She covered inventors for ThoughtCo for 18 years. She was a freelance writer, film producer, and director.   credited Mary for creating the number one online destination for information about inventors and inventions. Her writing has been reprinted and referenced in numerous educational books and articles. One of her films was a documentary on Alexander Graham Bell, the inventor of the telephone. She also worked as a curator specializing in computer-generated art. 


Mary Bellis held a Master of Fine Arts degree in film and animation from the San Francisco Art Institute.

ThoughtCo and Dotdash

ThoughtCo is a premier reference site focusing on expert-created education content. We are one of the top-10 information sites in the world as rated by comScore, a leading Internet measurement company. Every month, more than 13 million readers seek answers to their questions on ThoughtCo.

For more than 20 years, brands have been helping people find answers, solve problems, and get inspired. We are one of the top-20 largest content publishers on the Internet according to comScore, and reach more than 30% of the U.S. population monthly. Our brands collectively have won more than 20 industry awards in the last year alone, and recently Dotdash was named Publisher of the Year by Digiday, a leading industry publication.

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