"Johan Peter Emilius Hartmann" [Danish title] is number 907 in the Hans Christian Andersen Center's register of Andersen's literary works, i.e. no. 7 in the category biography (the range 901 - 1000). BFN 812.
Johan Peter Emilius Hartmann.
(Bibliografisk kilde: HCAH A-708f, 2000/342)
The work was published later (19 November 1868) as a part of Samlede Skrifter af H. C. Andersen. - Otte og Tyvende Bind [Danish title]. (Number 1029. BFN 975. Category/genre: Collected and miscellaneous writings).