c. 1845               Address Unknown, Philadelphia, Pennsylvania.

Simons & Collins (Montgomery Pike Simons & Thomas P. Collins) was mentioned in one advertisement that ran from July 4, 1846 to September 25, 1847 in the Sunbury American and Shamokin Journal (Sunbury, Pennsylvania).  Silver Medal, Awarded By The Franklin Institute, 1845.  City Daguerreotype Establishment.  T. P. Collins, (Late Simons & Collins.)  No. 100 Chestnut st., above Third, South side, Philadelphia.

Miniatures taken equally as well in cloud as in clear weather.  A dark silk dress for a lady, and a black suit for a gentleman, are preferable in sitting for a picture.  No extra charge is made for coloring, and perfect likenesses are guaranteed. 

Simons & Collins are recorded in other photographic directories and publications as casemakers Philadelphia Photographers 1839-1900 reference  Collins & Simons as David C. Collins and M. P. Simons activity dates 1845-1846.  Craig’s Daguerreian Registry list Simons as a casemaker from 1844-1847, with no mention of the partnership.  Nineteenth-Century PhotographyAn Annotated Bibliography 1839-1879 list the partnership as being active in 1845.