This directory contains the last pre-publication version of the paper Felsenstein, J. 1997. An alternating least squares approach to inferring phylogenies from pairwise distances. Systematic Biology 46: 101-111. The files are: fitch.pdf Manuscript and figures as a PDF fitch.doc Manuscript in Microsoft Word format fitch.tex Manuscript in LaTeX format fig1.idraw Figure 1 in Postscript fig2.idraw Figure 2 in Postscript fig3.idraw Figure 3 in Postscript fig4.idraw Figure 4 in Postscript fig5.idraw Figure 5 in PostscriptPlease note carefully that these papers, as published in the journals, are copyright to the publishers of those journals.