Old incandescent panel lamps

[cosmicray]

Over across the river, is a (rather atypical) DIY building materials store. There was one room in the back, that has been in disarray for at least 10 years (that I'm aware of). Few days ago I was over there looking for something, and noticed the lights were on in this room, and the door was open. So I peeks in, and saw a number of racks of Midwest parts bins, one of which contained these panel lamps. My guess is they date back 10-20 years (possibly more). The number 47 lamps I've not seen locally since Radio Shack closed operations. The others I am less familiar with. Are any of these HTF ?

[EPAIII]

An internet search for "HTF" only returns "Happy Tree Friends" for the first two and a half pages. Then one reference to "The Housing Trust Fund (HTF)". Then on the fifth page I saw "Hi-Tech Fasteners".

Then on page 8 I got "Hard To Find" as a term used on E-bay.

I bet you would get more responses if you just said that instead of the abbreviation.

As far as how hard to find they are,

https://www.amazon.com/s?k=light+bulb+%2347&ref=nb_sb_noss

You can take it from there for the other sizes. I suspect all of them can be found with a quick internet search.

...<snip>...

 Are any of these HTF ?