@bluwater101,
Im familiar with WH BARTLETT (not Barlett, I assume youve misspelled it). His work varies. Prints and stone lithos go for a few hundred, Im not sure about any originals of the late 19th century.
Glenn Eagle Speaker was part of a group show in the US Museum of the American Indian in DC. about 15 years ago There were some rally famous Indian artists like George Morrison so, although hes not a very famous name he was curated into some well known company hanging on the wall..