Today, I visited the archives and kibbutz museum of Kibbutz Kfar Menahem, and Shloimeleh Broideh, who is in charge of the museum, showed me various old photos of the kibbutz and its surroundings (including of Tell es-Safi/Gath which is just 3 km to the south of the kibbutz), which were taken in the late 1930s to late 1940s by the late photographer David Perlmutter (who was a kibbutz member).
There are some great photos in this collection!
Here is a view of Tell es-Safi/Gath, looking east/southeast, taken to the northwest of the tell. Based on the armed kibbutz members in the photo, this was probably taken during the Israel War of Independence in 1948. Note the famous white cliffs on the western side of the tell, the houses of the Arab village above and around the cliffs: