Copies of reports written and submitted by Regional Chairman Ken Seiling to members of the Council of the Regional Municipality of Waterloo including the general address to the Waterloo Regional Council, a report concerning groundwater assessment and protection in the region of Waterloo, and a report recommending that the Regional Municipality of Waterloo establish 1990 as Environment Year. All copies of the Regional Chairman's reports include annotations possibly written by Andrew Telegdi during his tenure as a Elected Councillor representing the City of Waterloo and the Regional Municipality of Waterloo.