Parker Brothers was founded by George S. Parker. Parker’s philosophy deviated from the prevalent theme of board game design; he believed that games should be played for enjoyment and did not need to emphasize morals and values.
Parker Brothers is the main board game division of Hasbro, formerly an American toy and game manufacturer which in 1991 became a brand of Hasbro. More than 1,800 games were published under the Parker Brothers name since 1883 including Monopoly and Cluedo. The company began to produce electronic versions of their popular board games in the late 1970s and early 1980s. Reference: Wikipedia
Below are some examples and price guides of games made by Parker Brothers including a shadow box framed Rough Rider game and a “Sunny Monday” washing set.