Sparkfun has a really cool tutorial on installing custom EAGLE libraries. However, DO NOT de-select the other libraries. As in, do not click on "lbr" and select "Use none": https://learn.sparkfun.com/tutorials/how-to-install-and-setup-eagle/using-the-sparkfun-libraries
Made with tons of help from Sparkfun's and Adafruit's EAGLE libraries. Make sure to check out their website and support their development! https://www.sparkfun.com/ https://www.adafruit.com/
https://github.com/adafruit/Adafruit-Eagle-Library https://github.com/sparkfun/SparkFun-Eagle-Libraries