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In 1986, Uniroyal Chemical Company was formed as a subsidiary of Avery Inc. Then, in 1989, Uniroyal Chemical Company Investors Holding bought Uniroyal Chemical Company from Avery and became Uniroyal Chemical Corporation. In 1996, Uniroyal Chemical Corporation went public and merged with Crompton & Knowles. In 1996, Uniroyal Chemical Corporation went public and merged with Crompton & Knowles. In 1999, Crompton & Knowles merged with Witco to form Crompton Corporation. In 2005, Crompton acquired Great Lakes Chemical Company, Inc., of West Lafayette, Indiana, to form Chemtura Corporation.

Chemtura Corporation was a global corporation headquartered in Philadelphia, Pennsylvania, with its other principal executive office in Middlebury, Connecticut. The company focused on specialty chemicals for various industrial sectors, and these were transportation (including automotive), energy, agriculture, and electronics. Chemtura operated manufacturing plants in 11 countries, including Canada.

Chemtura Corporation was the successor to Crompton & Knowles Corporation, which was incorporated in Massachusetts in 1900 and engaged in the manufacture and sale of specialty chemicals beginning in 1954. Crompton & Knowles traces its roots to Crompton Loom Works incorporated in the 1840s. In 2005, Crompton acquired Great Lakes Chemical Company, Inc., of West Lafayette, Indiana, to form Chemtura Corporation. Additionally, Great Lakes Chemical Corporation still existed as a subsidiary company of Chemtura. On April 21, 2017, Chemtura was officially acquired by Lanxess for $2.1 billion in cash.

In Canada, Chemtura and its predecessor corporations operated a plant in Elmira, Ontario. Since 1941 the plant has undergone various name and ownership changes. From 1966-2000 the plant operated as Uniroyal Chemical, from 2000-2006 as Crompton Company, and on July 1, 2006 formally changed its name to Chemtura Canada Company.

In 1946, under the Department of Medicine, Women's College Hospital established its first formal dermatology program, an outpatient clinic that was held twice a week. That year, Dr. Ricky Kanee Schachter was appointed Head of the newly formed Division of Dermatology. Under her leadership the program expanded to include the Phototherapy Education and Research Centre (PERC), launched in 1976. After Dr. Schachter's retirement in 1985 the Department operated under the leadership of the the following Heads of the Division of Dermatology: Dr. Colin Ramsay (1986-1990); Dr. Gary Sibbald (1991-1993) and Dr. Lynn From (1993-2000). In 1991 the Ricky Kanee Schachter Dermatology Centre was launched at Women's College Hospital. Today the Dermatology program is comprised of three main components:The Ricky Kanee Schachter Dermatology Centre; Dermatology Day Care and Wound-Healing Clinic and the Phototherapy Education and Research Centre (PERC).

The Walden Garden Club was first founded by Jean Narozanski in 1976. Narozanski was the municipal horticulturalist in Walden and also worked at the public library. She noticed a desire of residents to learn more about horticulture and founded the club to provide an outlet for various homeowners to discuss gardening. That same year, Narozanski also established Northern Perennials, a local gardening store. By 1980, Narozanski moved to Manitolan Island and the club discontinued around the mid 1980's.

Former Chairmen of the Walden Garden Club include;

Jean Narozanski 1976-1977
Evelyn Nelson 1977-1978
Myra Gauthier 1978-1979

The Art Institute of Ontario (AIO) was incorporated in 1951 to circulate art exhibitions, lecturers, and instructional programmes to venues in smaller communities. The idea of an art institute had been discussed informally as early as 1948, and the Art Gallery of Toronto had organized circulating exhibitions. The AIO was formed when a grant from the Ontario Department of Education made it possible to sponsor a travelling exhibition throughout the province. Later grants from the Atkinson Foundation, the Canada Council, and the Province of Ontario Council for the Arts supported AIO’s operations. The AIO was an alliance of several Ontario visual arts institutions and organizations. Its founding members were the Art Gallery of Hamilton, Art Gallery of Toronto (now Art Gallery of Ontario), Hart House (University of Toronto), London Public Library & Art Museum, National Gallery of Canada, Ontario Association of Architects, Ontario Society of Artists, Royal Ontario Museum, Willistead Library and Art Gallery (Windsor) and the Windsor Art Association. The AIO maintained close ties with the Art Gallery of Ontario throughout its existence. It was absorbed into the extension programme of the AGO in 1968.

The Arts and Letters Club of Burlington, Ontario was formed in 1948 by a small group of dedicated women as an out-growth of the Roseland Book Club. Its purpose was to develop interest in literature and the arts, through the circulation of books, lectures on literary topics, art, music, films and drama. The early meetings were held in the Lion’s Club Hall, later in Trefoil Lodge, and then in the Burlington Central Library.

The Beaver Valley Heritage Society began in the mid 1970s as a group of concerned citizens, and was incorporated in 1981 as a non-profit citizen's organization created to preserve and protect the natural environment of the Beaver Valley in Ontario. The Beaver Valley's territory runs through the four townships of Artemesia, Collingwood, Euphrasia and St. Vincent. It stretches over 25 miles, from Flesherton to Georgian Bay at Thornbury. The Beaver Valley Heritage Society endeavors to represent the interests of the Valley's residents and anyone who wishes to support the Society's objectives of opposing inappropriate development in the Valley. The Society supports development, provided it occurs in approved areas, and does not impact on wildlife, fishing, and the natural environment. The role of the Society is to present the views of its members in a coherent, concise and organized way to the decision-making bodies that have jurisdiction over the Beaver Valley.

OTWRC is a group of citizens' and agricultural groups who succeeded in cancelling the Ontario Waste Management Corporation's plans to build a hazardous waste plant in West Lincoln in the Niagara Peninsula. The group now comments on hazardous waste issues in Ontario and pushes for waste elimination.

The Department of Surgery at Women's College Hospital was established in 1915 under the leadership Dr. Minerva Reid (1915-1926), Chief of Surgery. By 1920, the department was performing approximately 500 operations per year. The Department was next headed by the following Surgeons-in-Chiefs: Dr. Edna Guest (1926-1931); Dr. Kathleen Bartley (1931-1946); Dr. Jessie Gray (1946-1964); Dr. Marjorie Davis (1965-1976); Dr. Robert D. Henderson (1976-1988); Dr. Lavina Lickley (1988-1999). In 1999, Women's College Hospital amalgamated with Sunnybrook Health Sciences Centre and the Orthopedic and Arthritic Institute to form Sunnybrook & Women’s College Hospital. During this time period, Women’s College Campus continued to maintain a Chief of Surgery. On April 1, 2006, Women's College Hospital regained its independent governance and became Ontario’s first and only ambulatory care hospital. The Ambulatory Surgical Services Program at Women's College Hospital performs a variety of surgical procedures including general surgery, plastic surgery focusing on breast cancer & breast reconstruction and urological procedures under the leadership of Dr. John Semple, Chief of Surgery.

The Department of Emergency Medicine of Women's College Hospital was officially established in 1981. Prior to the formation of the Department, patients received emergency care in the hospital’s Outpatient Department staffed by members of the Department of General Practice. In 1971, due to the high volume of emergency cases, Women's College Hospital established a separate Emergency Department under the leadership of Dr. Yvonne deBuda. In 1981 after review, the Emergency Department External Review Committee recommended that the existing Emergency Department fall under the direction of a distinct organizational entity staffed by full-time physicians and a Chief who would be a full-time member of the hospital's Medical Advisory Committee. In July 1981, the Department of Emergency Medicine was established under Dr. John W. Letts, Chief of Emergency Medicine (1981-1993). On April 30, 1987 the Urgent Care Centre officially opened, replacing the Emergency Department. In 1993 the Department of Emergency Medicine was dissolved.