Preservatory
Preservatory is a glass city whose inhabitants live sealed inside glass jars.
First named in The Cowardly Lion of Oz, ch. 16
"Preservatory," said a large sign just beyond the glass gates, and over the whole city hung a sweet, smoky haze.
Where this is
placed In Oz worked out
read out of the chapters cited on this page, not stated in any one sentence of them
Ch16 of Cowardly Lion of Oz describes its glass-jarred inhabitants as 'the oddest individuals in Oz.'
What the books say it is
appearance houses with glass fronts, more like cupboards than dwellings 1 chapter
The houses had glass fronts and were more like cupboards than ordinary dwellings.
The Cowardly Lion of Oz, ch. 16