Gus Grissom biographer George Leopold will speak to the public and sign copies of "Calculated Risk: The Supersonic Life and Times of Gus Grissom" on Feb. 4 at Spring Mill State Park.

The event will take place at 2 p.m. in the Oak Room of Spring Mill Inn.

Copies of the book will be for sale in the Oak Room and in the park office after the presentation.

For more information, contact the park's interpretive naturalist, Wyatt Williams, at (812) 849-3534 or wwilliams1@dnr.IN.gov.

Park admission is $7 per in-state vehicle and $9 per out-of-state vehicle.

Spring Mill State Park (stateparks.IN.gov/2968.htm) is at 3333 State Road 60 East, Mitchell, 47446.

To view all DNR news releases, please see dnr.IN.gov.

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Media contact: Wyatt Williams, interpretive naturalist, Spring Mill State Park, wwilliams1@dnr.IN.gov.