You have spelled it correctly. "To seal" means to close securely, and "sealed" is the past tense of "to seal."
That's correct.
The Sealed Envelope - 1912 was released on: USA: 18 October 1912
The Sealed Envelope - 1919 was released on: USA: 17 February 1919
The possessive form for the noun envelope is envelope's.Example: The envelope's flap wasn't sealed.
The cast of The Sealed Envelope - 1912 includes: Florence Barker as The Daughter Glen White as The Fiance
You spell it envelope.
My private letter to a loved one was sealed in an envelope and posted.
Sealed is correct
Envelopes is correct.
envelope
William McKinley; it was his offering for church.
seal
Man Without a Gun - 1957 The Sealed Envelope 1-7 was released on: USA: 24 January 1958