ferreted out

Most old books have now been ferreted out, and perhaps the only earths yet untried are in the Yezidi villages of the Sinjar.

His own public virtue was in this matter very great, for it was he who had ferreted out the secret.

But I was never able to get certain proof of it under unimpeachable conditions; and I have ferreted out many a trick.

He has the mould-pieces for a guide, and searches until he has ferreted out all the timbers wanted.

Later in the day he took a journey to Levison Park, ferreted out some information, and came home again.