School Library Journal (SLJ) referred to John, Paul, George & Ben as an "entertaining romp through American history",[1] while Booklist's Carolyn Phelan called it "deftly drawn, witty, and instantly appealing".[2] Elizabeth Bush, writing for The Bulletin of the Center for Children's Books, praised Smith for "out-legend[ing] the legends with his broad parodies of early adulatory histories",[3] and Publishers Weekly (PW) recommended the book "for those constitutionally opposed to history lessons".[4]
According to Biography's Barbara Feinberg, "Smith's witty text and illustrations bring new life".[5]PW specifically pointed out the "True or False section" at the back of the book, which they found to be "as hilarious as it is informative" and "a wonderful complement to this singular blend of parody and historically accurate events".[4]Kirkus Reviews similarly referred to the "True or False section" as "pretty funny" but indicated that Smith's "text lacks his sometime partner Jon Scieszka’s focus". They explained, "While there is a hallowed place for irreverence in children’s literature, one might wish for a work that more evenly balances humor with substance".[6]
Multiple reviewers discussed the book's artwork, with Kirkus Reviews praising the "faux-antiqued illustrations", which they found to "deliver bucket-loads of zany energy".[6]SLJ highlighted how the "gleeful pen-and-ink and collage artwork evokes the era and shows the lads' antics".[1] Similarly, Bush referred to Smith's "visual play on colonial artwork" as "pretty darn clever". According to Bush, most readers should recognize "the little founders' caricatures", which "are unmistakably based on well-known paintings", and "readers in the know will enjoy searching out more subtle references",[3] including "Beatles allusions, like the title," which PW noted "are mercifully few but well-placed".[4]
Phelan critiqued the book, noting that "the title offers a clue that Smith is winking at adults, but as good a joke as it is, most children just won't get it".[2] They further explained, "The artwork and design are excellent and adults will chortle, but this book seems likely to confuse children unfamiliar with the period. Kids will need to know actual, factual American history to appreciate what's going on."[2]