Update: What Are Those Handwritten Letters "To Business Owner" Taped To Smith Street Storefronts?

I just received an email from Reader N. who noticed envelopes addressed to storeowners taped to storefronts on Smith Street. He writes:

I wanted to ask you (or alert you) about something I saw this morning (8am) on Smith Street: Every store front on both sides of the street between Sackett and Warren (where I got on the train, so it’s likely they extended beyond these blocks) had an envelope taped to it that said (handwritten) “To: Business Owner”. A couple of these envelopes had a return address for TransAmerica (company description mentioned Mergers and Acquisitions). Could you find out what all of these solicitations are about?

Does anyone have an idea what the letters are about? Any shop owners out there who care to share with us?

UPDATE:
I got my hands on one of the letters.  See photos below.
The letters are actually from Transworld, business advisors that offer services like business sales, franchises, mergers and acquisitions.  Transworld was founded in 2010 and is located on Prince Street in Brooklyn. According to a Yelp page, "Transworld Business Advisors is the world leader in the marketing and sales of businesses, franchises and commercial real estate. Whether you represent an acquisition-minded corporation, or are personally interested in owning your own company, Transworld offers the professional services that successfully bring buyers and sellers together. From business brokerage to mergers and acquisitions; we are the business sale specialists."

They were distributed to businesses on quite a few blocks on Smith Street as well as Court Street.
Since it was taped to the front door of almost every store on certain blocks, Transworld does not seem to be in the market for a particular business.
Do you think there will be some takers out there?