Q: Attached are some photos of a lamp that has been in my family since the mid-1920s. The bottom has “Made in Czechoslovakia” engraved on it. I was wondering what you could tell me about it. S.N., ...

Since it tends to be associated with the shaga- delic 1970s, it is hard to believe the lava lamp is celebrating its 40th birthday. But although it seems somewhat younger, the ultimate retro “light ...