The following sources were consulted in the preparation of the article “10 time capsules that revealed shocking secrets when opened.”
- Nazi Time Capsule From 1930s Discovered in Poland
- N.C. Archaeologists and Conservators Open 1894 Time Capsule
- Sealed for 99 years and 363 days – so what was inside the mysterious parcel left to a small town in Norway?
- Central State time capsule offers glimpse at Indiana’s past
- #7 Anniversary: Alexander Bondar and Tatyana Palyga
- Arlington Cemetery’s 105-year-old time capsule is revealing lost treasures
- In 1962, Children Welded a Box Shut and Stored It Away from the Public. 64 Years Later, the Contents Are Coming to Light
- Here’s what was inside the time capsule found at Orlando’s Confederate statue
- 1956 time capsule contains some real surprises
- ‘It was genocide’: The secret society behind an ethnic cleansing in Minnesota
