While not from Tennant Creek, the kids were from just down the road (100 miles). The two parade pictures were from the 100th anniversary celebrations of Stuart’s first attempt to cross the continent in 1860 when he was turned back by hostile natives at Attack Creek. The others show the 1960 school building at Warrabri (Ali Curung) and two girls practicing on kettle drums.
As an aside, the parade mentioned above was led by a Constable Dunn on horseback (picture not forwarded) who led the last mounted police patrol of the Northern Territory Police. He was sent to track down cattle rustlers (duffers) on the Barkly Tablelands around Alexandria Station area and tracked them to the Queensland border. As he had no jurisdiction in Queensland he returned after 3 months with two prisoners who were released without penalty as being deemed only employees of the culprits.