This paper is a set of 28 problems (including 9 different figures drawn to illustrate the problems) probably for use in a class taught at University of Northern Iowa (since we were there in fall of 1980). Note on the paper written by Rose Warfield, says there is another copy in John Warfield's teaching files. The manuscript is in that old fashioned purple ink, done with duplicating machine used in schools a long time back, Warfield must have had the copies made at the UNI business school offices.
