[rockrr]

Sometimes for a quick~n~dirty confirmation I’ll use wackypedia but I’m sure you would like something a bit more credible than them ;’)

Here’s one brief source:
http://constitution.laws.com/three-fifths-compromise

And here is a better one:
http://www.heritage.org/constitution#!/articles/1/essays/6/three-fifths-clause

[tacticalogic]

Appreciate the link.

But the article doesn't appear to support the assertion:

"Initially, taxes were levied not in accordance to the population numbers, but the actual value of the land. Many states began to depreciate the value of the land in order to provide for relief from their taxes. A committee was held that would rectify the situation by implementing the apportionment of taxes in relation to the state’s population. However, this idea was met with the dispute over how to consider slaves in the apportionment process and the actual ratio of slaves to free people at that time.

For the most part, those who opposed slavery only wanted to consider the free people of a population, while those in favor wanted to include slaves in the population count."