This data set covers the output of an LDA topic modelling exercise analysing the blogs of 73 historians in the period 2008-2017. Due to copyrighted material, the text files analysed are not included in the data set. In the spreadsheets I have therefore removed columns listing file names. Topics were generated using Topic Modeling Tool. Of 60 topics, 32 are of interest, related to historical material, historical subjects, methodology, digital humanities, and academia.