It’s bag day at the Library of Congress. As part of its annual book sale, which ends today, you can fill an entire bag with books for $5.Books have been donated by employees at the library — and are not actually Library of Congress books — and proceeds benefit the general fund of the Combined Federal Campaign.Stop by the Madison Building (101 Independence Ave. SE), in the first floor atrium from 9 a.m. to 3 p.m. It’s open to the general public, but you'll need to bring cash or a check. Staffer engagementJonathan Gray successfully proposes to Jennifer Bowman. (Courtesy Liz Payne)Jonathan Gray, legislative director for Rep. Markwayne Mullin, R-Okla., proposed to Jennifer Bowman, legislative assistant for Sen. James M. Inhofe, R-Okla., in the Capitol Rotunda on Wednesday.She said yes!(h/t Liz Payne, communications director for Rep. Scott Tipton, R-Colo.) Bats matter The Botanic Garden is hosting Bat Bonanza on Saturday to celebrate Halloween. The invite says: “Come as a bat, come as a plant pollinated by a bat, or simply join us and learn about bats! There will be bat-related activities throughout the Conservatory — come and learn why bats matter!”It’s free, no registration required, from 10 a.m. to 5 p.m. at 100 Maryland Ave. SW. Members over recess Sen. Ron Johnson, R-Wisc., celebrates an endorsement. What you do when the Tavern League of Wisconsin endorses you: pic.twitter.com/wTo8q5BbVg — Ron Johnson (@RonJohnsonWI) October 27, 2016 Happy Birthday to…SaturdayRep. Marcia L. Fudge, D-Ohio, 64.SundaySen. Heidi Heitkamp, D-N.D., 61.Rep. Joe Heck, R-Nev., 55. (just 9 days before the Nevada Senate election!)Rep. Frank Pallone Jr., D-N.J., 65. Heard on the Hill This Week: Pre-Election DC Protests, Holmes Norton Depicted on Small Screen[jwp-video n="1"]What’s going on? Have any tips, announcements or Hill happenings? Send them to AlexGangitano@cqrollcall.com.