Date: Tue, 11 Mar 1997 10:24:29 -0500 From: Matthew James Gordon Subject: Re: mapping dialect spread I think the article you're almost remembering is "Some patterns of linguistic diffusion" by Guy Bailey et al., which appeared in Language Variation and Change, (1993). This presents some interesting results from the SOD (Survey of Oklahoma Dialects) Project and does investigate some "apparent time" data.