"The great god Pan" was first published 1894, "The shining pyramid" in 1895 and "The white people" in 1904.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
The great god Pan : The shining pyramid ; The white people by Arthur Machen. ISBN 9781906998165. Published by Parthian in 2010. Publication and catalogue information, links to buy online and reader comments.
