Ben, Thank you! So my Aunt's Highlander would have had the Save/Drain switch. From what I remember from the manual that came with mom's 58 Lady, the Sudssaver model had a similar selector switch to either save or drain suds, but it was called Suds Miser which was the name WP used for the feature so it was a mistake and every place that word was printed in the book had black mark unsuccessfully (at least to an inquisitive kid) obliterating "Miser." I don't know if that was the first appearance of the suds switch in a Kenmore. Anyway, the switch was labeled as above with a dark place on the control panel where the word "Miser" should be and it had the "ON" and "OFF" positions, I think, so Sears made it more complicated than necessary.
If you had double set tubs, the switch was not as important as if you had a single suds tub not connected to the plumbing like we had with our waterfall front Kenmore after we moved to Georgia. With our arrangement, it would have been nice to automatically send the wash water down the drain instead of doing the contortions we did. Our house had the sewer line going out about 4 feet above the floor because there was so much granite from Stone Mountain underlying the area that they could or would not go through it to lay the sewer lines any deeper. Daddy bought the tub so that we could continue using the sudssaver. Most of us have seen them in the Sears catalog. It was square, had wheels, a shelf just above the wheels to hold the legs together, and a cover
Thank you again and Happy 2019.