According to a book entitled Green Gold: the Tree of Life, Marijuana in Magic and Religion by Chris Bennett, Lynn Osburn, and Judy Osburn
The source for this is given elsewhere as Francis King, a better known writer on the occult.
Crowley's experiments with drugs have been influential, his writings on magick even more so, but there does not seem to be much evidence that he met Huxley or Wells. That he met Wells is more likely, as Allan Bennet seemed to have known him. The meeting between Huxley and Crowley is often repeated but there is no documentary evidence to back it up that I have seen.