The History of Toast

I amused myself this morning with what I thought would be a strange idea for a text; "The History of Toast" but it seems it is already a field in which many are interested:

The ancient Egyptians, around 6000 years ago, were the first to develop the bread that we know today. They realised that if they let the bread sit out in Egypt's warm climate it would rise, and when baked would retain its risen shape. However, they also noticed that after a few days in the dry desert air, the bread would become hard and unpleasant to eat. BBC

as well we have:

British Toast Racks for Collectors and the History of Toast (Paperback)
Author: Margaret Crumpton Joint Author: Peter Crumpton (I wonder if they are ever refered to as the crumpets?)
This book discusses the history of toast- a peculiarly British way of serving bread- and illustrates over 1,000 ceramic toast racks from the late eighteenth century to the present day.