Theresa Fuetterer Zook GemologistTheresa Fuetterer Zook, 87, an internationally recognized expert on the color of gemstones, died of sepsis Feb. 20 at Brighton Gardens in Arlington, where she lived.

Mrs. Zook published articles in the British Journal of Gemology and the publications of the Gemological Institute of America. She represented the United States in a meeting of the International Committee on Color in Gemstones in Bangkok and was a co-founder of the Accredited Gemologists Association of the United States.

Born in Barberton, Ohio, she graduated from Ohio University and received a master's degree in public administration from American University in 1946. She was a management intern at the U.S. Department of Agriculture and an industry analyst for the Office of Emergency Management and the Office of Price Administration during World War II.

She was founder of Zook and Zook consultants in Arlington, which operated from 1945 to 1947. She joined her husband from 1957 to 1963 on diplomatic assignments in South America, where she co-founded the Workshop in the Arts in Santiago, Chile, and directed the U.S. embassy committee on education in Montevideo, Uruguay.

After the family returned to the Northern Virginia area, Mrs. Zook taught history and government in the Fairfax schools in the 1960s. From 1977 to 1983, she was president of Alpha Gate Crafts Ltd. and the Associated Gem Consulting Laboratory.

She wrote "Directory of Selected Color Resources Annotated Guide" (1982), "Reunion of Descendants of David and Magdalena Zook" (1983) and "Basic Machine Knitting" (1979). She also played the flute, piano, harp and organ and enjoyed genealogical research, garden design and the textile arts.

Her husband, Donovan Q. Zook, died in 2006.

Survivors include two children, Theodore Alan Zook of Arlington and Jacqueline Zook Cochran of Oakboro, N.C.; a sister; and four grandchildren.

Meyer Wolfe Rosenblatt PrinterMeyer Wolfe Rosenblatt, 88, a former printer and pressroom worker at The Washington Post, died of complications from a stroke Feb. 22 at his home at the ManorCare retirement community in Delray Beach, Fla. He was a former resident of Silver Spring and Columbia.

Mr. Rosenblatt was born in Omaha, where his brother, John R. Rosenblatt, was mayor in the 1950s.

He was deaf from an early age and was educated at the Nebraska School for the Deaf. In the 1930s, he worked as a cowboy at the Armour & Co. stockyards in Omaha.

Mr. Rosenblatt moved to Chicago in the 1940s and worked in Armour's administrative offices, handling medical claims.

In the 1950s, he began training for a second career as a printer and apprenticed at the Chicago Sun-Times and with presses in California.

Mr. Rosenblatt moved to Silver Spring in 1960 and worked with small printing companies before joining The Post, where he worked in the composing room and as a typesetter and linotype operator. He retired in 1983 and moved to Florida in 2002.

His wife of 56 years, Sylvia Papish Rosenblatt, died in 2001.

Survivors include two sons, Lou Rosenblatt of Baltimore and Dan Rosenblatt of Alexandria; four grandchildren; and his companion -- who was his former high school sweetheart -- Frances White of Delray Beach.