The archive contains the personal and business papers of Harry Ralton. The latter concern Harry’s firm the Arcadia Music Publishing Co. There is also an extensive collection of his sheet music published in interwar Germany and in the UK in the 1940s and 1950s.

In addition there are two folders of letters addressing Harry’s attempts to help his mother escape Germany, Harry's life and career in the UK, post-war conditions and the fates of friends under the Nazis. Prominent correspondents include Herbert Sandberg, Harry’s cousin and conductor of the Royal Swedish Opera, and the journalist and resistance organiser Ruth Andreas-Friedich, who was recognised by Yad Vashem as Righteous Among the Nations.

Of note is also a piece of hate mail Harry received (see 2176/4/6) in response to the public announcement of his naturalisation.