Little Receipts — Kid Complete Series (Vols. 1–6, Kid-Friendly Edition, Interactive Editions)

All six member volumes, each the full Interactive Edition — complete text, recorded narration by Marcus, chronological timeline, and a 10-question educator quiz. About 144.22 minutes of recorded narration by Marcus across all six kid volumes; 36 chapters. Every chapter ends with The Receipt — a one-line takeaway a child can repeat. Big history. Little readers. All receipts.