From Chapter 1:
In November 1911 a curiously shaped pipe was put up for sale in Mr. J.C. Stevens's Auction Room, Covent Garden, which was described as that which Raleigh smoked "on the scaffold." The pipe in question was said to have been given by the doomed man to Bishop Andrewes, in whose family it remained for many years, and it was stated to have been in the family of the owner, who sent it for sale, for some 200 years. The pipe was of wood constructed in four pieces of strange shape, rudely carved with dogs' heads and faces of Red Indians. According to legend it had been presented to Raleigh by the Indians. The auctioneer, Mr. Stevens, remarked that unfortunately a parchment document about the pipe was lost some years ago, and declared, "If we could only produce the parchment the pipe would fetch £500." In the end, however, it was knocked down at seventy-five guineas.

From Chapter 6:
The clay pipes called "aldermen," with longer stems than their predecessors, tipped with glaze, came into use towards the end of the seventeenth century. They must not be confused with the much longer "churchwarden" or "yard of clay" which was not in vogue till the early years of the nineteenth century.