**LoveMoney / Celebrity Net Worth** — Nicolas Cage financial history: peak estimated fortune $150 million; Action Comics No. 1 purchase; IRS tax issues 2008–2009; property sales; career adaptation to pay debts; 2022 GQ debt settlement statement; estimated current net worth $40 million.
**Wikipedia: Action Comics No. 1** — Publication date (on sale April 18, 1938; cover-dated June 1938); publisher (National Allied Publications); creators (Jerry Siegel/Joe Shuster, $10/page); cover price (10 cents); print run (~200,000); survival estimate (50–100 copies, per Comics Buyer’s Guide 2012); grading population as of 2011 (six CGC copies above 4.0, one at 9.0); major sales history; cultural significance.
**Wikipedia: Action Comics** — Series history; founding; longevity; key developments; cultural significance.
**The Conversation (academic)** — Jerry Siegel and Joe Shuster’s backgrounds and creation of Superman; Cleveland origins; Glenville High School; development of the character; $130 sale price; Siegel’s personal history (father’s death, 1932); cultural significance of the character.
**GoCollect** — Overview of Cage’s collection; stage name origin (Luke Cage, John Cage); son’s name Kal-El; collection contents including Fantastic Four No. 1, Green Lantern No. 1, Detective Comics No. 27, Detective Comics No. 38; 2011 recovery and ComicConnect auction; subsequent record sales.
**Artnet News profile of Don Hrycyk** — LAPD Art Theft Detail: only unit of its kind in the country; Hrycyk operated largely alone; $107 million in recovered goods; methods (dealer network, expert consultation, tips); persistence in cases taking decades.
**Paul Fraser Collectibles** — Timeline of theft and recovery; “raid” description; 11-year characterization; storage locker; investigation status as of April 2011.