Mutrix "transvestite" fantasy stories were published in the 1960s and 1970s. You can read through What Happened to Pattie from the 1960s or 1970s here.
NOTE: Rather than opening one page at a time, you can click "CTRL +" succesively on this page until the images fill the screen. Then scroll down the page to read. And "CTRL 0" gets you back to normal viewing size size.
What Happened to Pattie, A Mutrix Book p65 1960s or 70s