160m small receiving loop antenna

I found this small loop antenna diagram from an old magazine. It looks to be a reproduction of the 1938 QST drawings of the W6GPY receiving loop antenna for 160 meters. If the 4-turn is reduced to 3-turn, then it will cover 80 meters. One separate turn is used for coupling.

Then the following is another version of the W1FB loop as discussed in July, 1977, QST magazine.
Alright, the picture is upside-down.