I think he means this: Event viewer - Custom views - Administrative events? (or summary of Administrative events?)
(I think this is probably what the op mean?) if I open this, I then have several itemised portions.
These are all log file of events that have occurred on your computer over a specified period. If you have deleted them, I don't think there is a way to get them back. But if your computer is operating OK, they are not important, and will quickly reestablish themselves, as they are, in many cases, merely a log of opening procedure, etc.
Fwiw. To obtain a copy of someone elses would be pointless, as the events are random and specific to the one computer. If you look again now, aprticularly if you have rebooted, you will find it has aklready recreated itself.