Here's an article on David Doty's website talking about Flute & Cane by
Imperial Glass. According to the article, a pair in purple would be very
rare. However, they were reproduced so you'll need to check them very,
very carefully for an "IG" mark.
h...
It appears to be the pitcher from a Brush McCoy lemonade set in the
Indian Village pattern. Here's a Worthpoint for a mug from the set:
https://www.worthpoint.com/worthopedia/early-brush-mccoy-indian-village-1948460265
and here's a site that has the ...