Jennifer Jazwinski (Jen J.) is the Assistant Manager in the all ages Popular Materials Department at the Palatine Public Library District in the Northwest suburbs of Chicago. She loves children’s and young adult literature and organizing data into spreadsheets. When she’s not playing with data and books, she enjoys bowling, LEGO video games, disc golf, trivia competitions, musicals and singing (both in her church choir and karaoke). She is a member of ALA and YALSA. She is not affiliated with Booklist, the Bulletin of the Center for Children’s Books, the Horn Book, Kirkus Reviews, Publishers Weekly, or School Library Journal. Any opinions expressed here are her own and do not reflect the opinions of the Palatine Public Library District, ALA, YALSA or any of the journals listed above. You can find her on Twitter @bkwrm7 or contact her using this form. For more information on how she got started with her spreadsheets see this post on Heavy Medal.