Don taught English at Stroudsburg High School for 30 years. He has an M.S. in aquatic biology, and since 1980 has worked as a biologist with Aquatic Resource Consulting. He has been involved in stream baseline and monitoring studies of fishes and macro-invertebrates throughout the Northeast.

A fly fisherman and tier since age 11, Don has published the booklet Pocono Hatches an article in Rod & Reel, and over 60 technical reports for Aquatic Resource Consulting. He has worked as a fly tying instructor and taught Entomology for Fly Fisherman at East Stroudsburg University.

Don has served as an instructor in fly fishing seminars at Kettle Creek Lodge and the International Fly Tying Symposium. He teaches fly fishing at Indian Springs on the upper Delaware River and presents slide programs on trout stream ecology and entomology, fly fishing techniques, and destinations such as Montana, Colorado, Alaska, and northern Quebec.