I enjoy all types and periods of history and altho the transition of the 1N34 Germanium diode to the 1N34A Germanium diode is interesting what I really prefer is social transitions and my two favorable periods for this is the time between WW1 and WW2 and the 1960's.
In looking at regional history, 1966 was a pivotal year as it was the year school integration and busing took full effect. Blacks and Whites were frustrated and mad over the Federal and State Government cramping crap down their throats. School Dances and Proms became tensions ridden events, White community support of the school sports teams hit an all time low when Black players made up the majority of the team. However Blacks were now being written about in the newspapers in a positive fashion as opposed to prior to 1966 when they only made the paper when they were arrested or some White person did something charitable for a Black organization. Usually there was one positive Black (The Token Black) article in each edition of the newspaper. For a researcher of historical events even that was a blessing as now you could do a limited amount of Black Genealogy.