Classicly

An Appeal in Favor of that Class of Americans Called Africans is an anti-slavery work by Lydia Maria Francis Child, was an American abolitionist, women's rights activist, Native American rights activist, novelist, journalist, and opponent of American expansionism.

Author's Preface:

Reader, I beseech you not to throw down this volume as soon as you have glanced at the title. Read it, if your prejudices will allow, for the very truth's sake:—If I have the most trifling claims upon your good will, for an hour's amusement to yourself, or benefit to your children, read it for my sake:—Read it, if it be merely to find fresh occasion to sneer at the vulgarity of the cause:—Read it, from sheer curiosity to see what a woman (who had much better attend to her household concerns) will say upon such a subject:—Read it, on any terms, and my purpose will be gained.

The subject I have chosen admits of no encomiums on my country; but as I generally make it an object to supply what is most needed, this circumstance is unimportant; the market is so glutted with flattery, that a little truth may be acceptable, were it only for its rarity.