Nice to have them both still together, so you can see the happy ending (if you position them correctly).

John H. Bufford operated Bufford's Lithographic & Publishing House (also known as Bufford's Print Publishing House) in the Boston, Massachusetts area from about 1857-1864.

J. Latham & Co. of Boston. 1876-1885. (Cited from: https://www.antiquers.com/threads/help-here-oil-painting-what-do-i-have-treasure-or-fake.56535/)
J Latham & Co operated in Boston around 1876-1885.
J. Latham & Co. of Boston. 1876-1885. (Cited from: https://www.antiquers.com/threads/help-here-oil-painting-what-do-i-have-treasure-or-fake.56535/)

In condition shown. Remnants to verso from where previously mounted on card.

Metre rule measurements as best I can, please see pictures.

Where I have provided no additional information on the item it is because I can find no identifying features to suggest where it has come from or what was the original format.

In condition shown, please see photos provided as best description, zoom is enabled for best viewing. 
Always happy to provide additional if requested.

I post all paper items protected and in proper card backed envelopes. 

If I have quoted a parcel postage price it is because I can't send it flat any other way without adding new folds, which I won't do. I will use existing folds to give the buyer the best possible postage price, so long as it doesn't compromise the item.

I will combine postage when I can, please request an invoice from me if UK buyer.

If non-UK, I only ship internationally using GSP, they will provide you with a combined postage invoice, but can't do so after a payment has already been made. Please await their invoice if you want combined shipping.