Dated machines
The Whirlpool was made in Marion, Ohio, 1972, 29th week, which is early June.
The Kenmore dryer was also made in Marion, the year code is a 3, but I can tell if that's 73 or 83 without seeing the machine or the model number. 50th week, so it was made around the Holidays of December. It could have been '93 also, but washers at least already had year lettering codes, which was a 'C' that year.
The newer washer was made in Clyde, Ohio (I believe all direct drives have come from there). E = 1995, 37th week.
Give me the model number of the Kenmore dryer and I can tell you the decade if you don't already know it.
Hope this helps!