This event is in the "Everyone" group. Guesstimation Jars All Day Everyone This event is in the "Everyone" group. Jul 1 2023 Sat Guesstimation Jars All Day Please note you are looking at an event that has already happened. Location: River Forest Public Library Room: Children's Room Age Group: Everyone Program Description: How many items are in the jar? Guess the closest and win a prize! 1 guess per person per month. The winner will be announced the following month.