The 1895 novel Heart of the World by H. Rider Haggard, based on tales of the "lost cities" of Central America, was a particular favorite of the young Morley.
H. Rider Haggards roman Heart of the World fra 1895 af baseret på eventyr om "tabte byer" i Mellemamerika, var en af den unge Morleys yndlingsbøger.