American Lung Association of Colorado, "The technique used in the marketing of Lark through hospitals and the medical profession was exactly similar to that used in the marketing of Kent in 1952." Ms. Landman's research, which began in 1998, further reveals that Liggett & Myers’ marketing campaign several months before the release of the Surgeon General's 1964 Report on Smoking and Health was directed at creating the rumor that medical scientists endorsed Lark as the safest cigarette. This marketing technique is credited for Lark's sales surpassing those of Kent in the Buffalo area and nearly doing so in the Houston area. Perhaps the biggest controversy about the reputed safety of Lark cigarettes was created by the publication of It Is Safe to Smoke by scientist Lloyd Mallan. Mallan recounts the findings of numerous scientists who all conclude based on the research conducted that smoking can be rendered harmless or considerably less harmful if the cigarette is equipped with a charcoal filter. The only other brand in the United States at the time with a charcoal filter was Tareyton, whose filter had a different structure from Lark and was deemed to be less effective. Hawthorne Publishing, however, took the book off the market in 1967 after a congressional investigation was launched into allegations that the tobacco industry had financed it. Subsequent research questioned whether the charcoal filter might have actually made Lark a more dangerous cigarette. A paper published in March 1997 by J.L. Pauly, et al., offered the following conclusion: "Charcoal granules are incorporated into cigarette filters to aid in removing toxins in cigarette smoke. In studies of Lark, a popular American cigarette with a charcoal filter, charcoal granules were observed on the filter surface, and were released from the filter when the cigarettes were smoked. During smoking, the toxin-containing charcoal granules are inhaled or ingested. The specific adverse health effects of inhaling or ingesting carbon granules have not been addressed; nevertheless, the smoker, as an educated consumer, should be informed of the possible health risks." Charcoal filter and decrease of cancer In January 1964, Louis Fieser, a member of the Surgeon General's Advisory Committee on Smoking and Lung Cancer, said that Lark cigarettes were probably safer than all other brands. Fieser, Sheldon Emery Professor of Organic Chemistry, recommended that smokers who were unable to quit should switch to Larks. According to Fieser, the charcoal for the Lark filter was