Nick,
With thanks to Paul Wicht, here is the direct link to the website hosting this great shot:
http://www.warwingsart.com/12thAirForce/Mitchell18.jpg
As for the machine, it looks neatly belly landed with minimal damage in a crop field which is still in its early stage of growth (March - April). Crossing my fingers it rings you a bell!
Cheers and thanks
Marc