30148Original, Hand-Drawn Motor Boat Design by the Swedish-born, American Boat Designer of the Immensely Popular Triton and Cape Dory 22
Alberg, Carl
Original, Hand-Drawn Motor Boat Design by the Swedish-born, American Boat Designer of the Immensely Popular Triton and Cape Dory 22
38359Rare Autograph Letter by Swedish Scientist and Balloonist, S.A. Andrée
Andree, Salomon
Rare Autograph Letter by Swedish Scientist and Balloonist, S.A. Andrée
37938Requesting Support for an Officer Destined to Serve in the Falkland Islands and Aboard Bougainville’s Historic Circumnavigation of the World
Bougainville, Louis-Antoine
Requesting Support for an Officer Destined to Serve in the Falkland Islands and Aboard Bougainville’s Historic Circumnavigation of the World
32834John Burroughs Photographed Outside of his Cabin “Slabsides”
Burroughs, John
John Burroughs Photographed Outside of his Cabin “Slabsides”
37434A Signed Photograph of the Famed Naturalist
Burroughs, John
A Signed Photograph of the Famed Naturalist
36964The Scottish Spiritualist and Creator of Sherlock Holmes Writes to the Resident of a Haunted Castle: “May I congratulate you both upon your own remarkable psychic gifts  and the grasp which you have of the subject”
Doyle, Arthur Conan
The Scottish Spiritualist and Creator of Sherlock Holmes Writes to the Resident of a Haunted Castle: “May I congratulate you both upon your own remarkable psychic gifts and the grasp which you have of the subject”
31099Autograph Letter Signed: “I especially never want to connect with Harden because I want to avoid any distant association whatsoever with his Vienna analog”
Freud, Sigmund
Autograph Letter Signed: “I especially never want to connect with Harden because I want to avoid any distant association whatsoever with his Vienna analog”
38309Freud’s 1933 Recommendation of Theodor Reik with Reik’s Handwritten Definition of Psychology
Freud, Sigmund
Freud’s 1933 Recommendation of Theodor Reik with Reik’s Handwritten Definition of Psychology
30505Typed Letter Signed and Manuscript about Barnstorming Pilot’s Adventures with His Close Friend Charles Lindbergh
Gurney, Harlan 'Bud'
Typed Letter Signed and Manuscript about Barnstorming Pilot’s Adventures with His Close Friend Charles Lindbergh
37610Lengthy Letter to his Wife as he Celebrates the New Year During WWI
Hahn, Otto
Lengthy Letter to his Wife as he Celebrates the New Year During WWI
37001Autograph Letter from the English Polymath, Astronomer and Photography Pioneer, Mentioning Digital Computer Pioneer Charles Babbage
Herschel, John Frederick William
Autograph Letter from the English Polymath, Astronomer and Photography Pioneer, Mentioning Digital Computer Pioneer Charles Babbage
33659Signed Airmail Envelope from the Very First Airplane Passenger on a Trans-Atlantic Flight
Levine, Charles A.
Signed Airmail Envelope from the Very First Airplane Passenger on a Trans-Atlantic Flight
35793Magnificent Inscribed Photograph to General “Hap” Arnold Just Prior to the Outbreak of WWII
Lindbergh, Charles A.
Magnificent Inscribed Photograph to General “Hap” Arnold Just Prior to the Outbreak of WWII
37099Letter on Alfred North Whitehead’s “Adventures of Ideas:” “The first two or three and the last chapters are wonderful. The middle of the book is too much for me”
Lindbergh, Charles A.
Letter on Alfred North Whitehead’s “Adventures of Ideas:” “The first two or three and the last chapters are wonderful. The middle of the book is too much for me”
36780Rare ALS by the “Father of American Geography” Referring to the Political Troubles of Virginia’s Governor Edmund Randolph and his Famous Vindication
Morse, Jedidiah
Rare ALS by the “Father of American Geography” Referring to the Political Troubles of Virginia’s Governor Edmund Randolph and his Famous Vindication
37514Rare ALS by the “Father of Toxicology”
Orfila, Mathieu
Rare ALS by the “Father of Toxicology”
38299Remarkable Pasteur Manuscript on Rabies Research Eight Months before the First Successful Human Vaccination
Pasteur, Louis
Remarkable Pasteur Manuscript on Rabies Research Eight Months before the First Successful Human Vaccination
38404Handwritten Pasteur Letter Regarding Membership in the Prestigious Académie Française
Pasteur, Louis
Handwritten Pasteur Letter Regarding Membership in the Prestigious Académie Française
38522Oversize & Stunning Pasteur Original Signed Steel Engraved Portrait
Pasteur, Louis
Oversize & Stunning Pasteur Original Signed Steel Engraved Portrait
37861Just Two Weeks after his Historic Space Flight:  “The personal concern which you and so many others have expressed for me and  for my flight in Sigma 7 is very gratifying”
Schirra, Walter "Wally"
Just Two Weeks after his Historic Space Flight: “The personal concern which you and so many others have expressed for me and for my flight in Sigma 7 is very gratifying”
34039Uncommon Autograph by “The Forger of Thunderbolts”
Steinmetz, Charles
Uncommon Autograph by “The Forger of Thunderbolts”
18942Remarkable Typed Letter Signed about Glenn H. Curtiss’ Behavior: “Only one with colossal nerve would dare to come out with the flat statements… that the machine he flew…was the original Langley machine”
Wright, Orville
Remarkable Typed Letter Signed about Glenn H. Curtiss’ Behavior: “Only one with colossal nerve would dare to come out with the flat statements… that the machine he flew…was the original Langley machine”
20967Important Two-page Autograph Letter Signed on Anchoring Airships on Water: “The anchors must not be raised”
Zeppelin, Ferdinand
Important Two-page Autograph Letter Signed on Anchoring Airships on Water: “The anchors must not be raised”