Here's some postcard references of my home, Sasebo, that can be used for an early 20th century Japanese city as they all come from the 1920s and 1930s.

Kameyama Hachiman Shrine
Note the memorial on the right; it commemorates all the workers who died in the construction of the Sasebo Naval District and it's arsenal. Military-related memorials are common at shrines in military towns like Sasebo and even in those without a direct tie.

Kaigun-bashi (Navy Bridge) crosses from the city proper to the military base. In the background are the petty officer's club and the Triumphal Return Memorial Hall. Built in 1924, it commemorates the Japanese navy's participation in World War I when Japanese destroyers protected allied shipping in the Mediterranean. I was married in that hall almost a decade ago.

Sasebo City Hall

Downtown Sasebo in the 1930s; Kaigun-bashi is on the upper left.

Downtown Sasebo; Tamaya department store (left) was erected in 1920 at a towering four stories featured the first electric elevator in Kyushu.

Another view of the same

A Sasebo yukaku, or geisha district. Geisha/Prostitutes were not allowed to leave the confines of their districts while employed, on or off duty.

A sentry post at the entrance of the Sasebo Naval District; officer's billeting is on the hill