The elderly couple seated beside me […] have told me in an hour’s flight time all about their children and grandchildren in Cincinnati (with, of course, a walletful of visual aids) […]

[…] E was an Efter, that went to the play; / F was a Fogle he knapped on his way; […]

I think there's an expression in poker. I'll tap you, Mr. Maverick.

The diary contains plenty of small puzzlements.