Analysis of information sources in references of the Wikipedia article "Oak" in English language version.
The gulpijip (oak-bark-roofed house) and neowajip (shingled house) are found in the northeastern part of the Korean peninsula, as well as in Korea's more mountainous areas. ... Gulpijip uses roofing made with the bark of trees such as cone-fruit platycarya, sawtooth oak, and cedar, which all have relatively thick bark.
Hortus, Marvell's Latin poem which seems to be an earlier version of the English one ... both poems begin with the rejection of the worlds of ambitious action, urban life and passionate love, and celebrate a supposed entrance into an entirely new life within the garden.