Puzzle 15

Looked covertly

B vitamin in green vegetables, lentils, liver

Lucky number in German, as elsewhere

Save files to another disk

Of inconsistent quality, not evenly covered

Key horizontal support beam in a building

George __, James Stewart in It's a Wonderful Life

A funny feeling

Led a music festival line up

Brendan Behan's prison setting play, The Quare __

1859 conflict between US and Britain over a porker

Sandstorm of northern Africa, Arabia and the US

Destructive timber decay caused by fungi

Water spirits in Celtic mythology