Bruce Smith's reference to the Kyoto Economic Review website said it would have articles 1926-present. I found them only until 1992. He also said they are in English and German - I tried to open one in 1926, and had to download the Japanese fonts from Adobe in order to read it - ten megabytes worth of download. But - yes- the article is in English. Apparently accessing anything on the site requires Japanese because that's the native language of the site.

Another article does have some Japanese text embedded in it but since it's all .pdf (thus an image, not true text), it should not make any difference whether the Japanese fonts are available. It's not surprising that there is a five-year gap in publication, from 1945-50, but it IS a surprise that all through the war years the journal continued to be published in an English edition.