'Oh yes, well as soon as I heard I went straight round to see them, yesterday afternoon. You haden't exactly gone out of your way to call attention to them had you? I mean like actually telling anybody or anything.'
'But the plans were on disply ...'
'On display? I eventualy had to go down to the cellar to find them.'
'That's the display department.'
'With a torch.'
'Ah, well the lights had probably gone.'
'So had the stairs'
'But look, you found the notice didn't you?'
'Yes,' said Arthur, 'yes I did. It was on display in the bottom of a locked filing cabinet stuck in a disused lavatory with a sign on the door saying Beware of the Leopard.'
The Hitchhikers's Guide to the Galaxy on page 20