Here we have more children, on the beach, but slightly later than the other cards. However it fits the first decade of the twentieth century theme that I seem to have followed. I am not saying that life was simpler then, but there would have been less plastic on the beach after the day trippers, and residents, were safe in bed, and I liek to think that they were more careful about not dropping rubbish - though they were way less kind to their feathered and furred friends than most of us are today. You cannot have it all I suppose.
This is a charming set, but I chose this card because it shows the children using their own imagination - they do not have a carriage, and probably could not afford a donkey ride, but they have found the basket chair and turned it over, and have made their toys into the most glorious steeds of all time. And they are having as much, if not more fun than the children who can afford all these things and are probably bored with them.
You can see all the cards in this series at WikimediaCommons/LSP - and to make them larger just click the image, They do not come up wonderfully large, but it is enough to save me making a checklist for you.
It also comes in Belgian ("Sur la Plage" as well), Dutch ("Aan Het Strand"), German ("Am Strand"), and Italian ("Sulla Spiaggia"). The Dutch one seems to be scarcest, not sure why.