The Mayor of the District of Columbia may direct the Chief of Police to empower any member of the police force, whenever such member shall be in search of property feloniously obtained, or in search of suspected offenders, to examine the books of any pawnbroker or his business premises, or the business premises of any licensed vender or dealer in secondhand merchandise, or intelligence office keeper, or auctioneer of watches and jewelry, or suspected private banking house, or other doubtful establishment.