The locations of seismic events during the early twentieth century were sometimes plagued by mislocations, especially in Africa where there were few seismograph stations. In this regard, it is common to find false earthquakes erroneously listed among true ones. Without critical assessment, such events, especially in historical catalogs, have remained in subsequent earthquake catalogs including modern ones. A number of these false earthquakes have been disclosed and their nature revealed and discussed in many places around the world (e.g., Giardini and Balassanaian, 1997; Albini et al., 2010; Grunthal and Walhstrom, 2011). The most difficult catalog records...
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