The Giulianiad was published in London from January 1833 through possibly July 1835. Its editor was not listed in any of the journals but it is fairly well accepted that Ferdinand Pelzer was very involved in the work. There are only two known locations of complete issues of the journal: The British Library and the Appleby Collection at the Guildhall School of Music and Drama. There are a number of individual issues in other collections and libraries.
My article on Horetzky with a facsimile of his Quatre Variations, Op. 22, recently appeared in the GFA Soundboard Volume XXXVII, No. 4. NOTE: I have updated this post with translations from Powrozniak and my comprehensive compositions list. Translations from Bartkowski are forthcoming.