Hours & Locations Downtown Library Ladd Library Downtown Library (319) 261-7323 450 Fifth Avenue SE Cedar Rapids, IA 52401 See map: Google Maps Sun: 1:00pm-5:00pm Mon-Thu: 9:00am-8:00pm Fri-Sat: 9:00am-5:00pm Ladd Library (319) 261-7323 3750 Williams Blvd. SW Cedar Rapids, IA 52404 See map: Google Maps Sun: 1:00pm-5:00pm Mon-Thu: 9:00pm-8:00pm Fri-Sat: 9:00pm-5:00pm