[1][2] In June 1987, residents approved a bond measure to build a library and add 41.5 acres (16.8 ha) to Memorial Park.

[3] This land was located along the Willamette River west of the original part of the park and was purchased from Nike, Inc. for $1.1 million.

[6] Wilsonville hired design firm Walker and Macy to create a master plan for the park in September 1990.

[8] The first phase of this development was to include new roads, new parking lots, a playground, a lighted tennis court, and a softball field at a cost of almost $825,000.

[9] Wilsonville's city council approved $500,000 for the project in May 1991, but issues with drainage in the park created problems with the plans.

[11] Costing about $423,000, the improvements included expanding the drainage system, a new ball field, and preparations for adding a playground and snack bar.

[11] Wilsonville purchased the Boozier property at the north end of the park in 1993, land totaling 22 acres (8.9 ha).

[14] Later in 1996, a full-size and half-size basketball courts were added to the park after donations by Nike and Hollywood Entertainment, who both had large operations in the city at that time.

[15] In April 1998, the city approved adding a skatepark at Memorial Park north of the tennis courts.

[24] The city purchased 11 acres (45,000 m2) of land across Wilsonville Road in November 2007 for $4.2 million in order to build an affordable senior housing complex.

[31] The wooden barn was built in 1901 by Gustave Stein and renovated in 2008, with improvements that included adding a sink and restoring the original shake roof.

[32] Other birds that inhabit the park include wrens, pileated woodpeckers, grosbeaks, red-tailed hawks, and bald eagles on occasion.