Eyewitness account of 1910 appearance of Halley's comet in Croatia (then part of Austro-Hungarian Empire). Author mentions that the comet's appearance portended eventual war in that country and points to the later assassination of Archduke Ferdinand and the outbreak of WWI as validation.
Eyewitness account of 1910 appearance of Halley's comet in Amsterdam, New York. Like many accounts, the writer expresses fear and awe at the comet's arrival.