History of the United States by E. Benjamin Andrews
This is a classic history of the United States written by historian E. Benjamin Andrews. It spans 6 volumes of which those that are pertinent to the 18th century are presented here. The source of the following is located at Project Gutenberg, where you can download all of six volumes (see links below).
Please note that this work was written in the early 20th century and as such, some of the themes and theories maybe dated. I present this as a starting point for budding historians to use for reference in their research in the history of the United States.
Source: The following articles found in this section maybe read here or you can download them at Project Gutenberg by following the links below.