Reddit reviews Wonderstruck (Schneider Family Book Award - Middle School Winner)

Are you thinking of the children's book Wonderstruck by Brian Selznick?

[from Amazon] Ben and Rose secretly wish their lives were different. Ben longs for the father he has never known. Rose dreams of a mysterious actress whose life she chronicles in a scrapbook. When Ben discovers a puzzling clue in his mother's room and Rose reads an enticing headline in the newspaper, both children set out alone on desperate quests to find what they are missing. Set fifty years apart, these two independent stories -- Ben's told in words, Rose's in pictures -- weave back and forth with mesmerizing symmetry.