Does anyone have the reference from Plato on recommending slinging as exercise for men and women?

Thanks,

AjlouniBoy

Try http://hnn.us/articles/1826.html

Found one:

Plato: Laws Book VII (Benjamin Jowett)

Now they must begin to learn-the boys going to teachers of horsemanship and the use of the bow, the javelin, and sling, and the girls too, if they do not object, at any rate until they know how to manage these weapons, and especially how to handle heavy arms; for I may note, that the practice which now prevails is almost universally misunderstood.

A different reference from Laches (Courage)

Socrates:
Again, take the case of one who endures in war, and is willing to fight, and wisely calculates and knows that others will help him, and that there will be fewer and inferior men against him than there are with him; and suppose that he has also advantages of position; would you say of such a one who endures with all this wisdom and preparation, that he, or some man in the opposing army who is in the opposite circumstances to these and yet endures and remains at his post, is the braver?

Laches:
I should say that the latter, Socrates, was the braver.

Socrates:
But, surely, this is a foolish endurance in comparison with the other?

Laches:
That is true.

Socrates:
Then you would say that he who in an engagement of cavalry endures, having the knowledge of horsemanship, is not so courageous as he who endures, having no such knowledge?

Laches:
So I should say.

Socrates:
And he who endures, having a knowledge of the use of the sling, or the bow, or of any other art, is not so courageous as he who endures, not having such a knowledge?

Laches:
True.

Very true!