Hey, Mister, Let’s Play! How They Went to Sleep
| Release Date | September 13, 1968 | |
|---|---|---|
| Status | Released | |
| Original Title | Jak šli spát | |
| Runtime | 13min | |
| Budget | — | |
| Revenue | — | |
| Language | Czech | |
| Original Language | Czech | |
| Production Countries | Czechoslovakia | |
| Production Companies | Krátký film Praha – Studio kresleného a loutkového filmu Praha | |