Jay's first cousin, Stephen B. Monroe, and a group of his associates in Kalamazoo, provided the original capital.

[3] He was also vice president of the Monroe Realty Company founded by his father, a director of the Maplewood Bank of Maplewood, New Jersey, where he long made his home, president of the Calculator Equipment Corporation, and a director of the Saving Investment and Trust Company of the Oranges in New Jersey.

[4] On September 7, 1926, this corporation purchased a house at 6 Halsey Place[5] in South Orange, New Jersey for Mr. Monroe to live in.

Throughout the house are Tiffany fixtures and leaded casement windows equipped with ultra-violet glass and roll screens.

The premises include two semi-attached garages for eight cars, a storage building, tea house, tennis court with disappearing backstops, green house, and an elevated putting green.He died at his home in South Orange, New Jersey on April 29, 1937[6] of a massive cerebral hemorrhage.