I can only go by what you have attributed to Blackerby, versus what I have read from Jordan.
or call PORTALS PRESS in Tuskeegee;the last time i called them, there were still a few copies of the book in the warehouse. ALSO, about 6 months ago, they told me they were considering bringing out a new & much expanded edition, which Dr Blackerby did not complete prior to his passing away.(i'm going to order SEVERAL for Christmas presents, if that happens=== his widow is very aged, in poor health & could use the $$$$$$$$. her portion of his pension from TU is small & doesn't go far.)
GOOD LUCK on your search;i believe you will be IMPRESSED with his work.
free dixie,sw