- Bauchi Province Annual Reports, 1902–1955 (Kaduna National Archives — NAK SNP series).
- Adamu, *Buba Yero and the Foundation of Gombe Emirate* (1978).
- Adeniyi Adelaja & Justin George, *Lake Chad: Power, Security and the Boko Haram Insurgency* (RUSI, 2019).Northern Abandonment Cycle
- Gombe State Council of Chiefs, *Report on the Kaltungo Chieftaincy Tribunal* (2018).
- ACLED — Armed Conflict Location & Event Data, Gombe state filter (2010–2024).
Gombe State · Crisis deep dive
Sources & further reading
Methodology
Tier 1 · primary
Courts. Gazettes. National archives.
Tier 2 · corroborating
OCCRP. HRW. BudgIT. TheCable.
Tier 4 · tertiary, flagged
Wikipedia only where primary is pending. Always labelled.