Universal City-based MCA Inc. has acquired Winterland...

Universal City-based MCA Inc. has acquired Winterland Productions, a San Francisco-based sportswear, music and entertainment concern, according to a Securities and Exchange Commission filing. The price was not disclosed . . . Sherman Oaks-based Hamburger Hamlets Inc. announced that its previously announced merger with Weatherly Restaurant Group Ltd. has been consummated . . . A group led by Santa Cruz Resources Inc. increased its stake in Los Angeles-based Foothill Group Inc’s class A common stock to 37.2%, according to a filing with the SEC . . . Unocal Corp., Los Angeles, may sell up to $1 billion worth of debt securities from time to time, according to an SEC filing.