Chief André is mentioned in records from the time of settling First Nation Reserves in 1877 as well as being a signatory to the Memorial to Frank Oliver in 1911.
An example of a kind of fishing barrier observed in the Barrière River was described by George Mercer Dawson as "two weirs or fences each of which stretched completely across the stream.
Stuart's wrote of his visit that after being blocked from a return to Fort Astoria by snow "[we] passed our time with the She Whaps and other tribes in that quarter.
The country through which we passed this day was covered with heavy timber, but having clear bottom and being good travelling, with here and there small open plains.
[9] Ross also notes the extent of the area with which the guide he met near East Barriere Lake was familiar when he writes after reaching Eagle Hill, "As we journeyed along our guide took us up to another height and pointing out to us the country generally, said he had passed and repassed through various parts of it seven different times, and in as many different places; he seemed to know it well, and observed that the road we had travelled, with all its difficulties, was the very best to be found.
And writes, "As to the Shin-poos, a mountain race, a remnant of the 'Snare Indians', my father in his report says, that there were but few of them (about 60 families) and that they did not come very regularly to the Fort.
They are good beaver hunters, and go sometimes to and even east of the Rocky Mountains—I had in view to have one or two men to accompany them all summer, so as to endeavor to meet the Gentlemen (that is to say the Express and Passengers coming in by Rocky Mountain Portage) coming to the Columbia next fall, at the little House (which I believe was at the east end of the Portage) which would be by far a nearer and more practicable way of obtaining a knowledge of the country about the heads of the Thompson and N Branch than by sending from the east side, as Mr Annance was, last summer: the Tribe not having come to the Port this Spring prevents my sending with them.
"[10]: 116 In 1862 a gold rush in the Cariboo brought smallpox to the area which caused many deaths, reducing the population to "the merest handful.
[11]: 8 In 1909 anthropologist James Teit recorded "opinions held by the tribe regarding the qualities and average characteristics of their neighbors and also of the several divisions of their own people in former days."
"[12] In August 1916, the Simpcw people of the Tête Jaune Cache were forcibly relocated out of the area to Chu Chua and other places.
The people of the Simpcw First Nation have made applications to the government to have lands at Tête Jaune Cache formally recognized.
[13][14][15][16][17][18][19][20][11]: 8 The Simpcw have been known in English by different names, "The name of the North Thompson Band, simpxʷwemx...also known in English to traders as people of the North Fork of Thompson River, was spelled Chin-Poo by [John] McLeod (1823) and [Archibald] McDonald (1827), Shinpoo by the Oblate Missionaries...and Nsi'mpxemux̣ by Teit.
Their former main village, ciqʷceqʷélqʷ 'red willows' (Cornus stolonifera)...was referred to as Tsuk-tsuk-kwalk, erroneously translated as 'red pine' by Dawson...and as Tcoqtceqwa'llk by Teit.
[49][50] These decisions were made by A. C. Anderson during a trip up the North Thompson River with Chief André on July 3–5, 1877 to as far as Little Fort.