M.M.White undertaker WashingtonDC Matthias M. White undertaker of Washington , DC Fisk and Raymond metallic coffins

Excellent discussion of Fisk coffins Jon N. Austin is the Executive Director of the Museum of Funeral Customs in Springfield, Illinois. We met at the iron coffin display in the museum, depicted at the right, where we discussed the Fisk Metallic Burial Case in the collection. We also talked about funerary customs during the 19th century, and the age-old fear and fallacy of being buried alive.

 Gone but not forgotten: cemeteries in the nation's capital

Gone but not forgotten: cemeteries in the nation's capital by Nancy on Scribd

This seems to be some kind of Fisk catalog or advertisement, on the back it is describing the burial of Mrs Dolley Madison.

 Fisk endorsement: Washington April 5th 

Gentleman- We witness the utility of your ornamental " Patent Metallic Burial Case " used to convey the remains of the late Hon. John C. Calhoun to the Congressional Cemetery, which impressed us with the belief that it is the best article known to us for transporting the dead to their final resting place.

With respect , We subscribe ourselves , yours etc.

{Signed} Henry Clay, Lewis Cass, Dan. Webster, Wm. R King, Jeff Davis, J.M. Berrien, J.Y. Mason, D.R. Atchinson, A.C. Green, Wm. P Mangum, Henry Dodge, D.S. Dickinson.

Similar testimonials might be added without number.

Daniel Webster was one of the famous people to endorse Fisk coffins and he was buried in one in Massachusetts in 1852. My guess would be Mister Fisk sent one to Boston and that a local undertaker handled the funeral. This article describes (in detail) how the body looked after being in a sealed metal coffin.

The Fisk company had burned in 1850 and RD Fisk died in 1852 so its unclear how the Fisk casket was obtained in Boston.

Gleason's Pictorial magazine of November 13 and 20, 1852 featuring images of Daniel Webster's Funeral  "THE REMAINS OF MR. WEBSTER IN HIS LIBRARY, AT MARSHFIELD, MASS." and  "THE METALLIC CASE" (You can see the metallic coffin on the caisson )

The Evening Star December 1863 : Mr Gulick introduced an act for the relief of M.M. White for burying small-pox paupers, This bill passed.

Death, Burial and Iron Coffins How Almond Dunbar Fisk’s invention revolutionized death’s place in American life. 

By Scott Warnasch

 Iron coffins are fascinating artifacts of a time when friction between technology and tradition created a spiritual crisis in the early days of the United States. They’re also a great example of how the unintended effects of one invention can beget new and seemingly unrelated inventions and even new industries. Iron coffins were created to mitigate some of the negative effects of long-distance steam transportation on a traditionally sedentary society. The benefits of steam travel are many and obvious; however, there were also downsides that began to seep into the most personal corners of American life. One unintended consequence was that steam travel enabled unprecedented numbers of people to head out, die and be buried by strangers far from home. read on PBS