Firefly & Fern

Chelsea House Publications, Peter Henshaw

Ages 8–16transportationengineering

Paul Stickland

Ages 2–6vehiclescommunity helpers

Ages 7–12discoveryscience

Dick Moores

Ages 6–12automobilesmechanics

Joanne Winne

Ages 5–10careersproblem-solving

Michael Dahl

Ages 4–8sciencemechanics

Jack David, Jack David

Ages 6–10vehiclesmotor sports

Kate Riggs

Ages 7–11technologytransportation

Bobby Mercer

Ages 8–14racingautomobiles

Daniel Gilpin

Ages 7–12technologyengineering

Heidi Gold-Dworkin, Robert K. Ullman

Ages 7–12physicsmotion

Ed Sobey

Ages 8–14engineeringscience