When was Lamb Air operating given this passage:


Context: Lamb Air Ltd. was a Canadian airline that began operations in 1934 in The Pas, Manitoba, and went out of business in 1981.

History
Tom Lamb was the son of Thomas Henry Peacock Lamb, who had emigrated from England in the late 19th century. THP Lamb turned from school teacher to fur trader and in 1900, started Lamb's Store in Moose Lake, Manitoba. Tom and his brothers and sisters grew up in northern Manitoba and worked for their father.

Tom Lamb left school before finishing grade 3. Later in life, he would make the comment, while giving his acceptance speech when receiving his honorary Doctorate of law from the University of Manitoba, "If I had only gotten to grade 4". At the age of 10, Tom, who had his own team of horses and sleigh, was competing with grown men in the fish hauling business. He would have to use fish boxes to step up on to be able to load his sleigh.

One of the Lamb family's businesses was "logistics and transportation". Fish, lumber, trees, fur and supplies needed to be hauled by any and all means. Dog teams, horses, boats, trucks and tractors were used. In the 1930s there was a transportation revolution happening. The aircraft was making its way into northern Canada. The first time Tom Lamb saw an aircraft he realized its potential. In 1930, Tom bought his first aircraft - a Stinson SR8. In 1930, Tom Lamb travelled to Winnipeg to learn to fly. To keep costs to a minimum, he lived in a tent behind the Winnipeg Flying Club. When he returned to The Pas and checked himself out on the Stinson.

In 1935, Tom incorporated Lamb Airways Limited. The airline had some name changes throughout the years and Tom became one of the best known Manitobans, if not Canadians, in the world. His adventures have been documented in books, a television documentary and even a song.

Answer: From 1934 to 1981.