Reference and nonreference books are interfiled without distinction.

I tried the flashlight, but the battery was as dead as a doorknob.

And some of them ascribe to Mercury, Colours; as all of them do effumability, as they speak

[…] to provide 30,000 temporary emergency houses for war workers in war production areas in England. These will help replace some of the 500,000 houses estimated to have been completely destroyed by the Luftwaffe and robombs.