No. 4 U.S. brewer Stroh Brewery Co., Detroit, said Thursday it will buy the flagging No. 5 brewer, G. Heileman Brewing Co., Rosemont, Ill., marketer of Old Style, Lone Star, Colt 45, Henry Weinhard, Special Export and Rainier. The price was undisclosed. Stroh said it hopes to complete the deal by July 1, pending Justice Department and Heileman stockholder approval. Stroh's beers include Stroh's, Old Milwaukee, Schlitz, Schaefer and Schlitz malt liquor. The status of the Heileman advertising account handled by W.B. Doner
& Co., Baltimore, is not yet known.