Question: Were the Walt Disney animated productions of Gargoyles and Victory Through Air Power both based on books by Alexander P. de Seversky?

Context paragraphs:
Peter Pan (1953 film): Peter Pan is a 1953 American animated adventure film produced by Walt Disney and based on the play "Peter Pan, or The Boy Who Wouldn't Grow Up" by J. M. Barrie.  It is the 14th Disney animated feature film and was originally released on February 5, 1953, by RKO Radio Pictures.  "Peter Pan" is the final Disney animated feature released through RKO before Walt Disney's founding of his own distribution company, Buena Vista Distribution, later in 1953 after the film was released.  "Peter Pan" is also the final Disney film in which all nine members of Disney's Nine Old Men worked together as directing animators.  It is also the second Disney animated film starring Kathryn Beaumont, Heather Angel, and Bill Thompson after their roles in the animated feature "Alice in Wonderland".

Phillip Meilinger: Phillip S. Meilinger (born in 1948) is a retired colonel of the USAF as well as a historian and analyst.  He is a member of the Academic Advisory Panel of the Royal Air Force Centre for Air Power Studies.  Before his retirement he was Dean of the School of Advanced Airpower Studies (SAAS) at the USAF's Air University in Montgomery, Alabama.  He received a BS degree from the United States Air Force Academy, an MA degree from the University of Colorado, and obtained a PhD degree in military history from the University of Michigan.  A command pilot, he has served as a C-130 aircraft commander and instructor pilot in both Europe and the Pacific.  After a tour at the Air Force Academy, he was assigned to the Doctrine Division of the Air Staff at the Pentagon.  He has authored four books and scores of articles.  Perhaps best known is his edited work, "The Paths of Heaven: The Evolution of Airpower Theory" (1997).  In an attempt to create debate and more reflection about the inherent characteristics of air power, in 1995 Dr Meiling wrote "Ten Propositions on Airpower", a small and influential booklet advocating what he considers to be the air power equivalent of Principles of War.  Among his many articles is:"Winged Defence: Answering the Critics of Airpower."  "Air Power Review" Vol.  5 No. 4 (Winter 2002), pp. 41–64.

Victory Through Air Power (film): Victory Through Air Power is a 1943 American Technicolor animated documentary feature film produced by Walt Disney Productions and released by United Artists on July 17, 1943.  It is based on the 1942 book "Victory Through Air Power" by Alexander P. de Seversky.  De Seversky appeared in the film, an unusual departure from the Disney animated feature films of the time.

Victory Through Air Power: Victory Through Air Power is a 1942 non-fiction book by Alexander P. de Seversky.  It was made into a 1943 Walt Disney animated feature film of the same name.

Gargoyles (TV series): Gargoyles is an American animated series produced by Walt Disney Television and Buena Vista Television, and originally aired from October 24, 1994 to February 15, 1997.  The series features a species of nocturnal creatures known as gargoyles that turn to stone during the day.  After spending a thousand years in an enchantedly petrified state, the gargoyles (who have been transported from medieval Scotland) are reawakened in modern-day New York City, and take on roles as the city's secret night-time protectors.

Saludos Amigos: Saludos Amigos (Spanish for "Greetings, Friends") is a 1942 American live-action animated package film produced by Walt Disney and released by RKO Radio Pictures.  It is the sixth Disney animated feature film and the first of the six package films produced by Walt Disney Productions in the 1940s.  Set in Latin America, it is made up of four different segments; Donald Duck stars in two of them and Goofy stars in one.  It also features the first appearance of José Carioca, the Brazilian cigar-smoking parrot.  "Saludos Amigos" was popular enough that Walt Disney decided to make another film about Latin America, "The Three Caballeros", to be produced two years later.  "Saludos Amigos" premiered in Rio de Janeiro on August 24, 1942.  It was released in the United States on February 6, 1943.  At 42 minutes, it is Disney's shortest animated feature to date.  It garnered positive reviews and was theatrically reissued in 1949, when it was shown on a double bill with the first reissue of "Dumbo".

Alexander P. de Seversky: Alexander Nikolaievich Prokofiev de Seversky (Russian: Алекса́ндр Никола́евич Проко́фьев-Се́верский ) (June 7, 1894 – August 24, 1974) was a Russian-American aviation pioneer, inventor, and influential advocate of strategic air power.

Aleksandr Pishvanov: Praporshik Aleksandr Mikhailovich Pishvanov was a World War I flying ace credited with five aerial victories.  After an unsuccessful fight against the Communist takeover of Russia, he became an American citizen in 1928.  His engineering skills were useful to both Sikorsky Aviation and to Seversky Aircraft Corporation from 1926 onwards.  In 1942, he helped Walt Disney produce Victory Through Air Power to support the American war effort.  Pishvanov's interest in aviation ended only with his death in New York City in 1964.

Gargoyles the Movie: The Heroes Awaken: Gargoyles the Movie: The Heroes Awaken is a direct-to-video animated film from The Walt Disney Company.  The film is actually the five-episode pilot ("Awakening") of the animated television series "Gargoyles" edited into one long feature film, approximately 100 minutes in length.  As a result, numerous scenes from the original broadcast episodes were cut due to time constraints.  In addition, a number of scenes were also moved around and some dialogues were changed.  The episodes were produced and aired in 1994, and the film was released to laserdisc and VHS in February 1995 and featured an interactive VHS/LD board game.  As the pilot episodes have been released to DVD as part of "Gargoyles": Season 1, this feature is unlikely to be released independently again.

Lilo &amp; Stitch: Lilo & Stitch is a 2002 American animated science fiction comedy-drama film produced by Walt Disney Feature Animation and released by Walt Disney Pictures.  The 42nd Disney animated feature film, "Lilo & Stitch" was written and directed by Dean DeBlois and Chris Sanders, the latter also starring as Stitch, and features the voices of Daveigh Chase, Tia Carrere, David Ogden Stiers, Kevin McDonald, Ving Rhames, Jason Scott Lee, and Kevin Michael Richardson.  It was the second of three Disney animated features produced primarily at the Florida animation studio located at Disney's Hollywood Studios (then known as Disney-MGM Studios during production) in Walt Disney World near Orlando, Florida.

Supporting paragraphs: Victory Through Air Power (film) Gargoyles (TV series)
Answer: no