On May 10, 1945, at a public meeting, which included the representatives of all local organizations, Mayor of the Village, John C. Blankenhorn, suggested that the community and pay tribute to its World War II military veterans by establishing a Memorial Library.

Six hundred and fifty-three men and women from the Lindenhurst School District and its neighboring unincorporated areas at this time had served in the armed forces, eighteen of which had lost their lives.

In 1946, a library site was purchased with funds from a Lindenhurst School District subscription drive, the proceeds of various benefit affairs and cash balances from local wartime efforts.

The Ground breaking took place on August 3, 1952 and the Lindenhurst Memorial Library at 440 South Wellwood Avenue began its service to the community on July 1, 1953.

Additionally, with limited book shelves filled to capacity, some 5,000 volumes had to be stored in the attic, in the rear building and in two trailers located outside the structure.

[2] As a result of the population growth and constant development of new homes and businesses, the Incorporated Village also needed larger quarters for its administrative offices and operating departments.

The beautiful, new Lindenhurst Memorial Library at One Lee Avenue was dedicated to the men and women who faithfully served their country in the time of war, on May 18, 1969.

[4] A referendum to fully renovate and expand the building by approximately 10,000 square feet, for $14.4 million dollars, with an additional $500,000 from the Library’s capital fund, was defeated by tax-payers on November 14, 2017.

An October 2019 referendum to fully renovate and expand the building by approximately 3,000 square feet, for $9.4 million dollars, with an additional $500,000 from the Library’s capital fund, was passed by tax-payers.

On November 7, 1999, following the parade in Lindenhurst to commemorate Veteran's Day, the memorial stained glass windows were unveiled and dedicated before an excited crowd of several hundred people.

As part of the fundraising effort for the "Windows on Wellwood" project, two hundred thirty blue and fifteen engraved gold stars were bought to honor living or deceased veterans.