Mark --

Here's a short excerpt from something I wrote a while back that addresses 
some of the variant uses of the terms queensware and whiteware by pottery 
manufacturers:

The 1807 embargo deprived American markets of many imported goods, 
including British ceramics (Myers 1980:5). The Philadelphia pottery 
manufacturers responded with increased production and expansion of their 
product lines to fill this unmet demand (Myers 1980:5). In addition to 
their long-standing lines of utilitarian earthenwares and stonewares, by 
1813 Philadelphia pottery manufacturers were advertising extensive lines 
of their own form of "Queensware" whiteware to replace the popular line of 
tablewares produced in Staffordshire (Barber 1909:111; Ketchum 1971:120; 
Myers 1980:6-7). This undertaking was the subject of proud report by the 
Governor of Pennsylvania in his annual message to the state legislature in 
1809, stating that "'we have lately established in Philadelphia a 
queensware pottery on an extensive scale'" (Barber 1909:111). Potteries in 
Baltimore were producing whitewares by the 1840s, and the pottery 
manufacturers of East Liverpool, Ohio lived up to their town's challenging 
name by producing whitewares comparable to Queensware by the 1850s (Barber 
1909:196; Ketchum 1971:134, 137). 

Barber, Edwin A. 1909. The Pottery and Porcelain of the United States.  
New York: G. P. Putnam's Sons.

Ketchum, William C., Jr. 1971. The Pottery and Porcelain Collector's 
Handbook.  New York: Funk & Wagnalls.

Myers, Susan H. 1980. Handcraft to Industry: Philadelphia Ceramics in the 
First Half of the Nineteenth Century. Washington, D.C.: Smithsonian 
Institution Press.

Cheers,
Chris