Turns out that TRC-920 ad I found was the tip of the iceberg. Here's a bunch more
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Page 14: 2/5/82 (my personal grail!)
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Page 7: 9/30/82
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Page 16: 12/17/81
Page 2: 11/7/84
Page 5: 3/10/83
Page 12: 12/11/81
Page 20: 10/21/82
Page 8: 2/1/84
Page 47: 7/16/87
Page 14: 2/5/82 (my personal grail!)
Pages 41,45,47: 5/7/87
Page 14: 3/5/82
Page 10: 8/12/82
Page 17: 8/17/82
Page 11: 5/24/81
Page 17: 9/28/82
Page 9: 7/21/83
Pages 8, 30: 9/23/83
Page 9: 7/24/81
Page 56: 8/6/87