Another rare and unusual knocker is shown on a house on Lynde Street, Salem, Massachusetts. This is of Mexican type, and has been on the house since its erection. It was painted over some years ago by an owner who cared little for its worth, and it was not until a comparatively short time ago that it was discovered to be a fine example of a rare type. The horseshoe knocker, a specimen of the hammer class, is a prized relic of many old homes. Like all true colonial specimens, it is made of wrought iron, painfully hammered by hand upon the forge in the absence of machinery for working iron, as even nails had to be hammered out in those early times. This is one of the quaintest and most original knockers, and is after the pattern of the earliest designed. Subsequent specimens were more elaborate, colonial craftsmen bestowing upon them their greatest skill. Among the most ornate were the purely Greek or Georgian vases or urns, eagles in all possible and impossible positions, heads of Medusa, Ariadne, and other mythological ladies, and Italian Renaissance subjects, such as nymphs, mermaids, and dolphins, with ribbons, garlands, and streamers. Not a few of these knockers have wonderfully interesting histories. Scenes have been enacted about them, which, could they be but known, would make thrilling tales. Take, for instance, the knocker on the Craigie House at Cambridge, Massachusetts. How many men of letters from all over the world have lifted the knocker to gain admittance to our late loved poet's home, and think what stories such visits could furnish! On the Whittier homestead at Amesbury, Massachusetts, is still to be seen the knocker which was on the door during the poet's life. This is of eagle design, probably chosen on account of its patriotic significance. Another interesting knocker formerly graced the house wherein the "Duchess" lived, on Turner Street, in Salem, many times lifted by Hawthorne, who was a frequent visitor to this dwelling, and who forever immortalized it in his famous romance, _The House of Seven Gables_. This is now replaced by another of different design. Considered to be one of the oldest knockers in this section is that on the door of the May house at Newton, Massachusetts. Be that as it may, it is certainly unique. The plate shows a phoenix rising from the plain brass surface, while the knocker has for ornamentation a Medieval head. This knocker has attracted the attention of antiquarians throughout the country, who have given it much study in attempts to find out the period in which it was made. Thumb latches are not so common as the hammer and ring class. Two of these specially unique show wonderful cutting. One is found on the front door of the Waters house on Washington Square, Salem, being brought from the John Crowninshield dwelling, while the other is seen on the side porch of this same residence, having been placed there at the time of the building's erection in 1795.