Been chipping away at this, down to last two. 28a Marginal note recording trouble about authority on etiquette: a?o???l. 23d Act as a receiver on a television: r?s??
I did say that i'd solved the last one, but that appears to have vanished now - like some of my recent questions! Thanks anyway - I have to say, I'd forgotten about Emily Post, I'd been thinking of something like Debrett.