The blog Clothes in Books calls it "mesmerizing" - In 1943, middle-class teenager Emma Smith, instead of enlisting in the Wrens or the ATS, joined the Grand Union Canal Carrying Company under their wartime scheme of employing women to replace men who had gone off to fight. Freed from a middle-class background, Emma and her new workmates joined the boating fraternity and learned how to handle a pair of 72ft long canal boats, carrying cargoes of steel and coal north from London to Birmingham and Coventry.

"How wonderful, thought Emma, that we can pass, anything, everything, all the time. And for a moment exuberance came into her mouth like a taste, and her tiredness lightened. Everything, she thought, we leave behind; nothing can grab hold of us; wretchedness may degrade and hold prisoner others, but not us – we spin by like a humming top and are free...

Nor did we at any time forget that while we rose and went to bed at whatever hour suited us, struggled and sweated with wet ropes and dirty cargo, ate what we pleased, wore what we fancied, and generally did as we liked, most girls of our age were in uniform and their lives severely ordered. Independence in fact, then out of bounds to so many, was the touchstone of our joy. We exaggerated its outward appearance, travelling on trains like utter ragamuffins, and remaining needlessly dirty when abroad in London or on leave. For we considered we were lucky, and that our sisters and most of our friends, compared to us, led lives of unqualified misery. Rather naturally, our sisters thought the same of us."