I am finally working on site that has yielded porcelain and stone marbles. I have Mark Randall's 1971 article on early marbles in Historical Archaeology. I have searched the web for books on marbles hoping to find more recent and detailed information. I can't tell by the descriptions what the quality of information the collector's literature has. Does anyone out there have a reference or references they are happy with or prefer.? Keith R. Doms Archaeologist McCormick Taylor (856) 793-0800 [log in to unmask]