Talk:Kasumigaura, Ibaraki

Location correct?
Where are the sources for both the history and the coordinates of this town? I found this National archive World War II reconnaisance photo that indicates the Kasumigaura Naval Air Base located just south of Tsuchiura. 36.05°N, 140.21667°W The photo labels a built-up area as Kasumigaura but this is in a different location from today's Kasumigaura. I am curious what it was, and whether there were two towns with the same name.