1930s

In addition to glazed ceramics we have, for the first time, actual remnants of wood — not simply imprints in the earth like those found at An-Yang. The first discovery of these woods was an accident, occurring at railroad excavations of the early 1930s in the South China province of Hunan, at the city of Ch’ang-Sha.

Source: wiktionary

Note the presence in the foreground of the fronds of ailanthus, often called “ghetto palm,” now ubiquitous in Baltimore but apparently already common in the 1930s.

Source: wiktionary

Their business model of the 1920s and 1930s, which had catapulted the business to undreamt-of heights, had then turned into something of a ball and chain.

Source: wiktionary