Seegee:
Although these older comics often mentioned spanking they rarely ever showed it. Dennis the Menace (the US one) was a classic example of that. Dennis did something that could get him spanked nearly every strip. I can't ever remember seeing him spanked in the strip, but I do remember at least 3 references to it. One was from his mother, one his Dad and one from Joey.
The British Dennis the M (who still appears in the kids' comic The Beano) was always a lot tougher than his US namesake - and got correspondingly treated far more severely. Almost every episode ended with the young delinquent across his irate dad's knee getting his bottom soundly slippered.
The comic strip's still running (it first appeared in 1951) - but in these PC days, alas, spankings are out.