Tha Alder translation books are for sale from Henry Stein. Link to his web page and follow the links to the volumes listed. May I suggest that it is most helpful to read them in chronological order, because Adler's ideas do develop over time.
Nice to see another Canadian on the forum!
Go to Henry's web page and go down quite a piece to Tapes and books I think it is.
Link:
http://ourworld.compuserve.com/homepages/hstein/