A mud clerk was a helper or all-around worker aboard a steamboat during the period before and after the American Civil War, particularly aboard steamboats on the Mississippi River.
law clerk | James Clerk Maxwell | Clerk of the New York Court of Appeals | MUD | Clerk of the United States House of Representatives | clerk | Toledo Mud Hens | Clerk | Lord Justice Clerk | Mud | James Clerk Maxwell Telescope | Clerk of the Supreme Court of the United States | clerk (position) | Clerk of the House of Commons | New Earth Mud | Mud (band) | Clerk (position) | Clerk of the Crown in Chancery | Articled clerk | Mud shrimp (disambiguation) | Mud shrimp | mud | Law clerk | John Clerk of Eldin | Court clerk | articled clerk | The Clerk's Tale | ''Rasputitsa (Sea of Mud)'', 1894, Alexei Savrasov | Pierre Clerk | New Zealand mud snail |