In the 1850s, in the course of the reorganisation of the jagir system subsequent to the British conquest of Sindh, the Nizamani were among the tribes with the largest number of jarirdars.
- Billimoria, N.M. (1943). "Census reports of Sindh for the years 1931 and 1941: a comparison". Journal of the Sind Historical Society. 6.4.. Reprinted in: Discovering Sindh's past: selections from the Journal of the Sind Historical Society. Michel Boivin, Matthew A. Cook, Julien Levesque (eds.). Karachi: Oxford University Press. 2017. ISBN 978-0-19-940780-4. Search this book on . According to Billimora, the Nizamani are exclusively found in Sindh (p. 300).
- 1998 District census report of Sanghar. Census publication. 75. Islamabad: Population Census Organization, Statistics Division, Government of Pakistan. 2000. p. 6. Search this book on
- District Government Tando Muhammad Khan District. Development Profile District Tando Muhammad Khan (PDF). Search this book on
- Khuhro, Hamida (1999). The making of modern Sindh : British policy and social change in the nineteenth century (2nd ed.). Oxford University Press. ISBN 978-0-19-579008-5.
Goldsmidt produced a draft list of 134 jagirdars, from twenty-four tribes, but a final list of seventy-four jagirdars was submitted to the Goverment for confirmation. [..] Jagirdars had been selected on the basis of the importance of their tribe. [...] The largest numbers came from the Talpur (eleven), Nizamani (ten), and the Laghari (twelve)Search this book on .
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