While rummaging through my collection of National Geographics after writing the previous post on "Ruins", I came across the September 1925 issue which featured reporting on the NatGeo's archeological dig at Pueblo Bonito, and there was a rather startling color photo of the ruins as they were during the 1923 season, after quite a bit of archeology had gone on but before there had been much or any restoration.
This is a picture taken around 1940 (or as late as 1960; the caption wasn't clear) taken from approximately the same viewpoint. The picture below it was taken recently:
