Bill,
Thank you very much for taking your time to provide me a mini-tutorial on level shifters and their use. A lot of the i2c protocol can get confusing so your in-depth info is a great help.
In the past I have always used 'buck boosters' to raise 3.3v to whatever higher voltage I may need. In my case that would be 5v for the LCD and 10v for some LED's I use in an enclosure for a water tank project I recently finished.
These are the 'buck boosters' I use: Amazon.com
Here is a grab of the interior of the enclosure lid mentioned above.
I sincerely appreciate your help.