1849-1850       62 Purchase Street, New Bedford, Massachusetts.[1]

1850 May 22.  Daily Evening Standard.  (New Bedford, Massachusetts.)  May 22, 1850, Vol. 1, No. 80, P. 3.

S. S. Changing, Daguerreotype Artist, No. 62 Purchase Street, New Bedford.  Miniatures taken in a good case for One Dollar, in a manner which cannot fail to give perfect satisfaction.  The public are invited to call and examine the operations of his new apparatus, with which he can produce better likenesses than have ever been taken in this city.

[1] Listed in A Directory Of Massachusetts Photographers 1839-1900 for 1849.