I picked up this postcard because I was unfamiliar with the casual greeting, “Honeyface”.

This may have had a private meaning related to an unfortunate mishap while eating or gathering honey, but it is more likely to be a friendly term of affection.

(Upon looking up the term, I find that washing your face with honey is actually a part of some personal beauty regimens.)

I have not made a study of “slang” expressions, but I have seen in old postcards many other casual terms of address that are no longer used.

Mabel Gracey lived in Sabula, PA, a populated place in Clearfield County; the nearest town is Dubois.

https://pennsylvania.hometownlocator.com/pa/clearfield/sabula.cfm

This area remains a sparsely-populated, rural area in west central Pennsylvania.

Florence lived somewhere nearby; she wrote the postcard which was addressed, but not mailed.

We can assume that the postcard was hand-delivered by an intermediary.

The face of the postcard is illustrated by a mountainous, woodland scene that would have looked familiar to residents of the area.

(An artist’s signature is faintly visible on the lower left of the face, but I cannot distinguish the name.)

https://en.wikipedia.org/wiki/Allegheny_Mountains

Florence encourages Mary to “be sure to come down on Friday”.

Mary should also “bring the rest of the folks with you”.

If not, Florence threatens to “go up after you”.

One hopes that the friends were able to meet as planned.