From the Earth to the Moon / Round the Moon

From Author Wars - https://authorwars.com/publications/from-the-earth-to-the-moon--round-the-moon-335722.html

Overview:

Title: From the Earth to the Moon / Round the Moon
Author: Jules Verne
Year: 1993
Publisher: Project Gutenberg
Price: $0.00
Binding: ebook
Type: Omnibus
Title Reference: From the Earth to the Moon / Round the Moon
Notes:
Data from publisher website {{tr|Louis Mercier and Eleanor E. King}} (uncredited)

HTML file header cites Project Gutenberg Ebook #44278 (see at ISFDB) as "an improved edition of this title". This one contains no identification of any source edition, nor a strong clue, but examination of the chapter titles and the narrative text confirms the note.