What Is/Was The Dutch Stamp Trade?

I acquired this cover for the historical significance of the recipient.

Kenneth Pike Emory (November 23, 1897 – January 2, 1992) was an American anthropologist who played a key role in shaping modern anthropology in Oceania.

However, I could not find any information on "Dutch Stamp Trade".
Don't know if this was just an obscure company back in 1918 that is no longer in business. If anyone can identify what "Dutch Stamp Trade" business was, that would be great!
Thank you.

There is a www.stamptrade.nl . You might contact them and see if they have any info?


Peter

The address is for a house built in 1911. Local newspapers from the 1920s do have advertisements for local stamp dealers, but not this one. Also an address book from the early 1960s lists stamp dealers in Haarlem, but that does not include this one.

It is a residential property. It does not appear to ever have had a shop on the ground floor. Unless they renumbered the properties on this street, this may have been someone who traded stamps from his home.

edit: spelling

Much to my surprise, I have been walking through this street (although a hundred metres north of number 30) once or twice a year on my way from the Haarlem train station to "'t Kopje" in Bloemendaal (and back).

Thank you both for your input. Thanks NSK for doing further research and taking your time.
This will conclude any further research needed on this topic.

I think it was a philately company, selling stamps to collectors. Like many it might have been only a one-person-company/shop, without a store on location, or one that was organised in the private setting of a house. There used to be many companies like that, probably peaking in numbers between 1930-1975. If you really want to know more, then maybe the (current) Dutch federation of stamp traders knows some history about this seller (Nederlandse Vereniging van Postzegelhandelaren - NVPH - happy collecting :)

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