Which source would you consult for a firsthand, personal view of a historical event? political speech electronic advertisement diary entry newspaper editorial

When we say firsthand and personal source, this would mean that the answers that you are looking for should come directly from the person him or herself who is involved in a particular issue or event. In this case, it is the diary entry that could be considered as a first hand source for a historical event. The diary is directly written by the person him or herself.