These include,LCD.h
LCD.cpp
I2CIO.h
I2CIO.cpp
LiquidCrystal_I2C.h
LiquidCrystal_I2C.cpp
examples/LcdHelloWorld/LcdHelloWorld.ino
These files inherit the licence of “New LiquidCrystal Library” which are under a Creative Commons Attribution-ShareAlike 3.0 Unported License. CC BY-SA 3.0.