Minor errors or inconsistencies of punctuation or formatting have been corrected silently. Where it seems most likely that spelling errors were made by the printer, they have been corrected as noted below. Most quoted material is not noticeably lax in this regard, perhaps because the author made his own corrections.

However, spelling of proper names can vary and are generally allowed to stand, even where the Index disagrees with the referred text. For instance, the index entry ‘Blackmaars, Mich.’ refers to the possessive form ‘Blackmaar’s’ in the text. It is not clear whether the reference is to a village or merely the residence of a family of that name. Similarly, the entry for ‘Davitts ——’ refers to ‘Davitt’s’. A less trustworthy entry for ‘Dee Sulhorst, Justus’ refers to 'the farm of Justus DeSeelhorst’. The latter spelling is borne out by historical records, but the index has not been corrected.

The entry for ‘Phillipps Ferry’ (‘Phillip’s Ferry’ in the text), was considered an error and corrected by removing the redundant letter.

The index entry for ‘Guyol de Guirano’ appears as ‘Guirano, Guyolde’ which has been deemed an error and corrected.