Otto Robert Maier was the founder of Ravensburger, which is the leading manufactuar of Board Games in Europe. He also created a variety of other games that became popular around the world.
Ravensburger puzzles are available at brick and mortar stores like Toys 'r Us, Walmart, or Barnes & Noble. If these stores aren't in your neighborhood, Ravensburger puzzles can also be found at online retailers like puzzlewarehouse, bigfishgames or the old standby, Amazon.
Ravensburg was created in 1276.
Ravensburger Digital is a company that manufactures digital media and is located in Munich, Germany. The manufacturer's website offers many Ravensburger jigsaw puzzles that can be played online.
Ravensburger Puzzleballs can be purchased from a plethora of retail stores that sell toys, games and puzzles. Retail outlets such as Toys 'R' Us, Hobby Lobby, and Walmart carry a wide assortment of these items.
Ebay is a great resource for buying used puzzles and games. Be sure to read all fine print before purchasing to make sure you will be satisfied with your purchase.
Ravensburger is a company that was originally founded in 1883 to play a key factor in the development of children. They now make puzzles for children and adults as well as Pre School toys. Here is a link to their site: http://www.ravensburger.com/usa/home/index.html
Socratic Puzzles was created in 1997.
The Canterbury Puzzles was created in 1907.
Stave Puzzles was created in 1974.
Liberty Puzzles was created in 2005.
Wentworth Wooden Puzzles was created in 1994.
Games World of Puzzles was created in 1993.