Ƙirƙirar wani nau'i mai rikitarwa na wannan jumla'' Yan littafinsa na musamman da na musamman'(1875 - 1881) yana da matukar sha'awa ga mai son littafi.
Tabbas, mafi rikitarwa na jumla ita ce "His '' 'Bayanin Lokaci na Unique da Very Rare Books' (1875 - 1881 ) sun haɗa da wasu abubuwa da''Annalia Dubrensia' 'na Robert Dover. "