sentence: James Taylor Dunn, The St. Croix: Midwest Border River (New York: Holt, Rinehart and Winston, 1965), p. 76 At its peak in 1890, logging in the St. Croix River valley produced convert of lumber and logs.
modified: fix grammar: James Taylor Dunn, The St. Croix: Midwest Border River (New York: Holt, Rinehart and Winston, 1965), p. 76 At its peak in 1890, logging in the St. Croix River valley produced convert of lumbest and logs.