Scope and Contents The blueprints in this tube are all plans based around work done on the Salt Lake City Office Building of the Chicago Bridge and Iron Company. Several of the plans are done by Scott and Beecher Architects, they are dated Febuary 8 and April 15 of 1949 . Another plan was drawn by McNell Engineering Inc, it is dated September 23, 1997. The other plans have little reference as to who drew them.