Lost Libraries....

Hi All,
I know this is going to sound silly! but after a windows 7/64 re-install I seem to have lost some Libraries, what’s more I can’t seem to find them, even tried Github, where I may have found some in the first place, but I can’t even see how/where you download…

These include:

<DS1307RTC.h>
<I2CIO.h>
<FastIO.h>
<LiquidCrystal_I2C.h>
<Wire.h>
<Time.h>

Can someone guide me in the right direction??

Thanks for any help, regards.

Mel.

I usually try a Google search for: nameOfLibrary Arduino library

For example a search for DS1307RTC Arduino library turned up this as the second hit:
https://www.pjrc.com/teensy/td_libs_DS1307RTC.html
The Time library is around there, too.