@Matt Note that recent versions of ArcBruTile for ArcGIS no longer support mapspast layers (do not support maps in projections other than EPSG:3857 - aka google/web mercator). Likewise the built-in TMS support in ArcGIS pro does not support NZTM2000 projection.

We will endeavour to regenerate all the hosted map series in EPSG:3857 by the end of the year, to allow ArcGIS support to resume.
(2022/01/02 04:18)
@Matt MapsPast layers are now available for ArcGIS Pro.

http://au.mapspast.org.nz/3857/topo50-2019/{z}/{x}/{y}.png
http://au.mapspast.org.nz/3857/topo50-2009/{z}/{x}/{y}.png
http://au.mapspast.org.nz/3857/nzms260-1999/{z}/{x}/{y}.png
http://au.mapspast.org.nz/3857/nzms260-1989/{z}/{x}/{y}.png
http://au.mapspast.org.nz/3857/nzms1-1979/{z}/{x}/{y}.png
http://au.mapspast.org.nz/3857/nzms1-1969/{z}/{x}/{y}.png
http://au.mapspast.org.nz/3857/nzms1-1959/{z}/{x}/{y}.png
http://au.mapspast.org.nz/3857/nzms15-1949/{z}/{x}/{y}.png
http://au.mapspast.org.nz/3857/nzms13-1939/{z}/{x}/{y}.png
http://au.mapspast.org.nz/3857/nzms13-1929/{z}/{x}/{y}.png
http://au.mapspast.org.nz/3857/nzms13-1919/{z}/{x}/{y}.png
http://au.mapspast.org.nz/3857/nzms13-1909/{z}/{x}/{y}.png
http://au.mapspast.org.nz/3857/nzms13-1899/{z}/{x}/{y}.png

These can be added using 'Add data from path' in ArcGISPro.

Other versions of ArcGIS may be supported in future.
(2022/02/17 01:24)