Fr. Ph. Dunst published mainly domestic music in Frankfurt from before 1829 to 1848. It also published some works by Ferdinand Ries and some works of Beethoven. One local item was Rhein-Sagen und Lieder (1839-45).
They published Beethoven piano concertos in early (mid-1830s) editions (, e.g. - not the first publication but still a complete edition of his 5 piano concertos, perhaps their first appearance in print together?)