Counties and squatting districts and populations in the NSW 1851 Census. This includes present day south east Queensland.

For NSW see:

Reuss & Browne, cartographer & Reuss, F. H & Browne, J. L & Degotardi, Johann Nepomuk. (1860). Reuss & Browne's map of New South Wales and part of Queensland shewing the relative positions of the pastoral runs, squattages, districts, counties, towns, reserves &c Retrieved December 13, 2025, from http://nla.gov.au/nla.obj-230694679

For some Qld regions see:

Sketch of the "Burnett" and "Wide Bay" districts with parts of Darling Downs, Maranoa, and Moreton districts [cartographic material] / C. Rolleston 1849.
Rolleston, Christopher. : Between 1849 and 1850 https://digital.sl.nsw.gov.au/delivery/DeliveryManagerServlet?embedded=true&toolbar=false&dps_pid=IE3800928