Loren also served as ghost writer for a series of fictional western novels based on Lassiter, the hero in Zane Grey's Riders of the Purple Sage.
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Loren also examined the ideas of Austrian psychologist Alfred Adler in Alfred Adler, the Forgotten Prophet: A Vision for the 21st Century, which was published in 1998.
He was survived by a younger brother, Loren Grey, a professor of psychology at Valley State College in California; and by a sister, Betty Zane Grosso.
Grey's Anatomy | Sophia Loren | Grey Cup | Zane Grey | Grey Heron | Lady Jane Grey | George Grey | Earl Grey | Grey | The Grey Fox | Jean Grey | Rudolph Grey | Edward Grey, 1st Viscount Grey of Fallodon | Loren Chasse | Joel Grey | Grey Teal | Charles Grey, 2nd Earl Grey | Al Grey | Albert Grey, 4th Earl Grey | Loren Cass | Grey Nuns | Fifty Shades of Grey | David Grey | Alex Grey | Thomas de Grey, 6th Baron Walsingham | The Old Grey Whistle Test | Grey Gardens | Charles Grey | Aubrey de Grey | Thomas de Grey, 2nd Earl de Grey |