Seated three-quarter length figure, head and body turned right. Right hand holds book, and left hand holds gown. Background at left includes wooden table with books, papers, and microscope. Figures wears academic gown, black suit, tie, white shirt. Signed "H. R. Butler/ 33" on lower right corner.

Three-quarter length seated figure, body turned slightly right, head forward. Hands on arm of chair. Figure wears academic robe, blue suit, waistcoat, white shirt, and blue and brown tie. Signed "Grace Dahl" in lower right corner.

Half-length figure seated in armchair, head and body leaning forward, both hands showing; head bald with white hair at back, white moustache; blue eyes and rosy complexion. Suit and waistcoat are dull blue, waistcoat piped in white. Collar and shirt are white and cravat is red.

Three-quarter seated figure, left hand on knee, left arm leaning against upholstered chair arm. Sitter wears dark blue suit, maroon tie, and white shirt. Brown background with table; papers suggested at his right arm.

Near half-length seated figure, body and face approximately forward. Wearing dark blue coat, waistcoat and tie, white wing-collared shirt. Rosette in buttonhole of lapel. Background of books, files, containers, painting, clock, candlestick. Signed "Conrad/ F. Haeseler" in lower left corner.

Bust-length portrait of figure turned three-quarters to the left, in front of a hazy grey-blue background, resembling a cloudy sky. The subject has dark, graying hair and sideburns, hazel eyes, and a clear, rosy complexion. He wears a dark gray coat, a white waistcoat and shirt, and a white stock, tied in a high knot. Signed and dated in the lower left corner, "Agassiz / by D. Huntington / 1857."

Three-quarter-length seated figure turned left, head resting on left hand, right hand holding manuscripts. The sitter wears a black coat and waistcoat and a white shirt. There is a red table cloth at lower right, under manuscript. Gray-brown background. Signed: "D. Huntington/1861" on lower right corner.

Depicts head, shoulders, and chest of figure, facing right, wearing dark suit, white shirt, and tie, with white hair and a beard. Inscribed "D. Huntington" on front lower left corner.

Half-length figure seated on a red upholstered chair, with body turned left and head facing forward. He wears a coat, waistcoat, and neckcloth. Brown background.

Three-quarter length portrait of a seated figure in a red, upholstered armchair, the body turned slightly to the right. Both hands are in the subject's lap; he holds an open book with his left hand and a pair of spectacles in his right. The subject has gray hair, gray eyes, and a pale complexion. He wears a black suit, a white collar and stock, and a vermilion scarf. On the desk to the left are three books and pages of a manuscript. A thermometer hangs on the wall in left background. Signed and dated "J.R. Lambdin / 1856" in left center of canvas, on the desk below the manuscript pages.

The sitter faces the viewer’s left in three-quarter profile. He has a broad brow and receding hairline with short, thin dark hair, and his left ear is visible. The sitter is dressed in a dark overcoat and white cravat with a bow; a small medallion decorates the left lapel of his coat. He is seated in a red chair, positioned against a modulated backdrop.

Obverse: profile portrait of Humboldt. Reverse: unidentified symbol between "ALEXANDER / VON HUMBOLDT / 14.9.1769 6.5.1859" and "S. SCHüTZ 1967"

Head and shoulders of subject, slightly turned right. Wears robe, dark coat, and cravat with stickpin. Dark brown background. After ca. 1899 portrait by artist, who copied a 1897 photograph.

Profile portrait of Alexander von Humboldt, with "Alexander von Humboldt/1769 - 1859" around perimeter.

Subject sits at table covered with green cloth bearing APS seal. On table is a box with gavel and percussion piece. Charles Willson Peale's portrait of Benjamin Franklin after David Martin (58.P.1) is visible over subject's right shoulder. ENIAC logic board is in foreground. Scene appears to be set in the auditorium of the APS's Franklin Hall. Notations from Goldstine's notebooks are incised on the wide wooden frame.

3/4 figure, standing facing left, wearing white medical coat open at front, with hands in pockets, white background. Inscribed "Albert Murray 1966" at front lower left corner.

Subject stands, head slightly to the right, wearing camel hair jacket, shirt, and blue and red striped tie.

Obverse: profile portrait of Carl Friedrich Gauss; "Carolvs Fridericvs Gavss NAT. MDCCLXXVII APR. XXX OB. MDCCCLV FEB. XXIII" around perimeter. "Brehmer F." under portrait. Reverse: ivy wreath; "Georgivs V Rex Hannoverae Mathematicorvm Principi" in center and "ACADEMIAE SVAE GEORGIAE AVGVSTAE DECORI AETERNO" around perimeter.

Obverse: profile portrait of Carl Friedrich Gauss; "Carolvs Fridericvs Gavss NAT. MDCCLXXVII APR. XXX OB. MDCCCLV FEB. XXIII" around perimeter. "Brehmer F." under portrait. Reverse: ivy wreath; "Georgivs V Rex Hannoverae Mathematicorvm Principi" in center and "ACADEMIAE SVAE GEORGIAE AVGVSTAE DECORI AETERNO" around perimeter.

The sitter faces the viewer’s right in three-quarter view. He has a receding hairline with short, thin, graying hair and a prominent brow, and his right ear is visible. He is dressed in a dark overcoat and white cravat, positioned against a dark, somewhat modulated background.