>>In Holland we have (or at least had) monthly editions in which I have
 >>seen such puzzles. A personal webpage in Dutch containing a similar
 >>puzzle is
 >>http://members.lycos.nl/puzzel/logica.html#Puzzel3

 > Thanks! That is just what I was looking for.

 >>House-Tree-Animal

 > or Huisje-boomje-beestje! "Beestje" is great - makes you think of
 > beasties. Dutch is really fun to read when you know German and
English. Is
 > the "-je" at the end of each word same as German "-chen", a diminutive?
 > "Boomje" sounds like "baumchen".

You're right, Kristin (is that a Scandinavian name BTW?), it is a
diminutive. "-je" is the basic form, but depending on the last letter of
the word sometimes "-tje", "-pje" or "-etje" has to be added. Like the
tree: 'boom'-'boomPje' (instead of 'boomje').
And "beest" could indeed be translated to "beast", although I think that
"beast" might have a bit of a negative connotation to it, whereas
"beest" doesn't.

Some more news: I did find a tree+tent problem in a recent edition of a
puzzle magazine, so they still exist and are reasonably popular. If you
don't mind the language-difference, you might want to take a peek into
one of the magazines in the category "logische puzzels" on
http://www.abonnee.nu/index_html?titelid=28
(look for "breinbrekers"="brainbashers" and "logimix")
Or on
http://www.denksport.nl/denkshop/puzzel.php?959766020
(look for Logi-Varia)

I have the impression that logic puzzles seem to be slightly more
popular in the Dutch speaking community (including Belgium). For
instance, whole separate editions are devoted to a puzzle type called
"Logikwiz" or "Logigram", whereas I haven't been able to find any such
diagrams on the internet in other languages. See for example my own site
http://home.planet.nl/~d.langers/home.html?3gB
Is this impression correct, or have I just not been able to find the
right sites?