Report by W.R. Leaitch, M.D. Couture, S. Bacic, H.A. Weibe, J.W. Bottenheim and K.G. Anlauf. Includes poem by Ron Baird, sculptor, on p. [4] of cover. "As part of the Eulerian Model Evaluation Program, the Eulerian Model Evaluation Field Study (EMEFS) was undertaken in Muskoka from 20 July-30 August, 1988. This study involved two aircraft [sic], the National Research Council Twin Otter and Innotech Aviation DC-3, based at Muskoka airport flying between two ground measurement sites, one at Egbert, Ontario and the other at Dorset, Ontario. These two ground sites are approximately 120 km apart, about the width of one grid square in the Eulerian model. The primary objective of the field study was to collect data on the concentrations of major pollutant species in the air and clouds as a function of altitude and distance along the Egbert-Dorset track ... This document details the results of the measurements and collections made aboard the Twin Otter aircraft"--Introduction. V. 1 includes the introduction, flight summary, standards and calibrations, instrumental measurements, bulk sample collections, buffer description, references, Appendix A, and part 1 of Appendix B. V. 2 includes part 2 of Appendix B. Includes bibliographic references.