Illinois Service Federal Savings and Loan / ISF Bank / GN Bank

CTL-E-1251 · Business · bank · 1930s, 1940s, 1950s, 1960s, 1970s, 1980s, 1990s, 2000s, 2010s, 2020s

PROVISIONAL evidence grade of this record

Chicago's historic Black-owned thrift — founded 1934 by 13 Black men pooling $7,000 to make mortgages in redlined neighborhoods; demutualized and recapitalized by the Nduom family in 2016; renamed GN Bank in 2018; survived OCC enforcement and remains operating.

Notes

Merged into canonical KG 2026-10-03 from INST-001; source entity IDs: CTL-DR-INST-001:INST-044; source research type(s): bank.

Sources

ProPublica, 'What's Gone Wrong at Chicago's Last Black-Owned Bank' (2021). https://www.propublica.org/article/whats-gone-wrong-at-chicagos-last-black-owned-bank
ProPublica, 'Chicago's Last Black-Owned Bank Got Millions in Government Deposits — Then Had to Give Them Back' (2021). https://www.propublica.org/article/chicagos-last-black-owned-bank-got-millions-in-government-deposits-then-had-to-give-them-back
Next City, 'Chicago Black-Owned Bank Deposit' (urbanist news). https://nextcity.org/urbanist-news/chicago-black-owned-bank-deposit
Chicago Patterns, 'Atomic Age Banking: Illinois Service Federal.' http://chicagopatterns.com/atomic-age-banking-illinois-service-federal/
GhanaWebbers, 'GN Bank Chicago declared safe and sound by U.S. regulator' (2025). https://www.ghanawebbers.com/GhanaHomePage/NewsArchive/GN-Bank-Chicago-declared-safe-and-sound-by-U-S-regulator-2064440
Sankofa Online, 'GN Bank: A Legacy of Resilience and Community Empowerment' (2024-09-20). https://sankofaonline.com/gn-bank-a-legacy-of-resilience-and-community-empowerment/
TodayGH, 'GN Bank supports Methodist Chapel dedicated in Chicago' (2026-06-08). https://www.todaygh.com/gn-bank-supports-methodist-chapel-dedicated-in-chicago/
propublica.org, 'What's Gone Wrong at Chicago's Last Black-Owned Bank' (2021); businessghana.com (2018) quoting OCC materials
propublica.org (2021)
newrepublicliberia.com (2018); sankofaonline.com (2024)
propublica.org, 'Chicago's Last Black-Owned Bank Got Millions in Government Deposits — Then Had to Give Them Back' (2021); sankofaonline.com (2024)
ghanawebbers.com (2025); todaygh.com (2026-06-08)

Record CTL-E-1251 · CultureTechLens Knowledge Graph · evidence grade: PROVISIONAL · 12 sources · CTL research: INST-001.
Directory: all entity records · the knowledge graph

Cite this record

Cite as: CultureTechLens, “Illinois Service Federal Savings and Loan / ISF Bank / GN Bank (CTL-E-1251),” CultureTechLens Knowledge Graph, October 2026. https://culturetechlens.com/graph/entities/ctl-e-1251/

Chicago: CultureTechLens. “Illinois Service Federal Savings and Loan / ISF Bank / GN Bank (CTL-E-1251).” CultureTechLens Knowledge Graph. Chicago, IL: CultureTechLens, 2026. https://culturetechlens.com/graph/entities/ctl-e-1251/
APA: CultureTechLens. (2026). Illinois Service Federal Savings and Loan / ISF Bank / GN Bank (CTL-E-1251) [Entity record]. CultureTechLens Knowledge Graph. https://culturetechlens.com/graph/entities/ctl-e-1251/
MLA: CultureTechLens. “Illinois Service Federal Savings and Loan / ISF Bank / GN Bank (CTL-E-1251).” CultureTechLens Knowledge Graph, 2026, https://culturetechlens.com/graph/entities/ctl-e-1251/

Citation guidance for teachers, journalists, and funders: How to Cite Us.

From the Archive

The archive in pictures

Black enterprise — the shops, banks, and trades that built it. Photographs from the CultureTechLens research record — rights-cleared, credited, and cited like everything else here.

Only Negro store of its kind in the U.S., at 2933 State St., Chicago, Ill, Chicago, 1941Photo: Du Bois, W. E. B. (William Edward Burghardt), 1868-1963, collector, FSA-OWI, Public Domain, via Library of Congress

Policeman talking to employee of Ten-cent store whose trade is predominantly Negro. Chicago, Illinois, Chicago, 1941Photo: Lee, Russell, 1903-1986, FSA-OWI, Public Domain, via Library of Congress

The Overton Hygienic Building, 3619–6227 S. State St., Chicago — Anthony Overton’s Black Metropolis business headquartersPhoto: Andrew Jameson, CC BY-SA 3.0, via Wikimedia Commons

Trust & evidence

Evidence before authority. CultureTechLens publishes its methods, its limits, and its corrections alongside its findings. Claims carry grades — VERIFIED, SUPPORTED, PROVISIONAL, DISPUTED, UNRESOLVED — and unknowns are never reported as zero.

Every claim graded. Every source named. Every correction public — none to date.