Man with feathered hat and cloak holding a dagger:

• pencil sketch on paper
• loose
• 12.5 x 20.2 cm

Mask:

• pencil sketch on tracing paper
• loose
• 11.1 x 13.0 cm

Mountainous landscape with bridge:

• pencil sketch on paper
• loose
• 7.7 x 11.9 cm
• [on sketch] '(?) 3' (pencil note)

Diagram with numbers:

• pencil sketch on paper, mounted on lined paper
• loose
• 3.3 x 6.5 cm (9.5 x 13.4 cm with mount)

Men grinding copper ore in Bolivia:

• pencil sketch on paper, partially glued to lined paper
• loose
• 12.7 x 6.8 cm (13.4 x 9.5 cm with mount)

Man grinding copper ore in Bolivia:

• pencil sketch on paper, partially glued to lined paper
• loose
• 6.8 x 12.7 cm (9.5 x 13.4 cm with mount)
• [on sketch] 'Grinding Copper ore / in Bolivia - / The stone is called / Quimballeta (underlined) / Indian word (underlined)' (pencil note)

Frontal view of face of moustachioed man in feathered hat:

• inked pencil sketch on paper, mounted on lined paper
• loose
• 6.5 x 10.7 cm (7.5 x 11.6 cm with mount)

Ornamental design:

• ink and wash sketch on paper
• loose
• 16.0 x 10 cm

Desk crowned with bust of man with large moustache:

• pencil sketch on paper
• loose
• 17.8 x 11.2 cm

Bust of man with large moustache and desk:

• pencil sketches on paper
• loose
• 11.2 x 17.8 cm
• [on sketch] '578 (initially 588) / 571 (initially 582) / 20 (underlined)'

Two profile views of male heads:

• ink (purple) sketches on paper, with hole-punch on top right corner
• loose
• 11.3 x 6.2 cm

Landscape with house:

• pencil and watercolour sketch on paper
• loose
• 29.1 x 22.8 cm

Architectonic designs (plans, elevations and axonometric projections):

• pencil and ink sketches on paper
• originally partially glued, now loose
• 31.9 x 21.9 cm

Architectonic designs (plans, elevations and sections):

• pencil and ink sketches on paper
• originally partially glued, now loose
• 31.9 x 21.9 cm

Design of drinking fountain with weather vane (elevation and plan):

• inked pencil drawing with watercolour (grey, brown, blue, orange) on paper, with pricked marks for pouncing technique
• loose
• 31.7 x 40.3 cm

Idealised view of the approach to an Egyptian temple, with the avenue of sphinxes connecting quay and entrance:

• ink sketch on paper
• mounted
• 22.6 x 17.3 cm
• [on sketch] 'Drawing by / Park' (pencil note)

Arched structure (not identified):

• pencil sketch on paper
• mounted
• 8.4 x 12.5 cm

Landscape with two human figures at Beirut in Lebanon:

• pencil sketch on paper
• mounted
• 12.4 x 15.3 cm
• [on sketch] 'Beyrout' (pencil note)

Knotted or braided columns built into the wall in the Temple Mound at Jerusalem in Israel:

• pencil sketches on paper
• originally partially glued (now loose), together with Bonomi MSS 26.5 (lower left and lower right)
• 11.9 x 19 cm
• [on mount] 'Camera sketch / in the Haram / Es sherif Jerusalem / cipolino marble / columns built into / the wall' (pencil note)

Knotted or braided column built into the wall in the Temple Mound at Jerusalem in Israel:

• pencil sketch on paper
• originally partially glued (now loose), together with Bonomi MSS 26.5 (lower left and lower right)
• 11.9 x 19 cm
• [on mount] 'Camera sketch / in the Haram / Es sherif Jerusalem / cipolino marble / columns built into / the wall' (pencil note)

Knotted or braided design with face, probably of stone column or pillar:

• partially inked pencil sketch on paper
• mounted, together with Bonomi MSS 26.5 (upper and lower left)
• 6.7 x 9.5 cm

Knotted or braided design with two faces, probably of stone column or pillar:

• partially inked pencil sketch on paper
• mounted, together with Bonomi MSS 26.5 (upper and lower right)
• 6.8 x 7.7 cm

Architectonic designs (elevations, sections and details):

• pencil and ink sketches on paper
• mounted, together with Bonomi MSS 26.3 (lower)
• 22.9 x 18.8 cm

Architectonic designs (elevations, sections and details):

• pencil and ink sketches on paper
• mounted, together with Bonomi MSS 26.3 (upper)
• 22.9 x 18.7 cm

Preparatory/preliminary sketch of Bonomi MSS 26.2 (recto):

• pencil sketch on paper
• loose
• 28.5 x 16.1 cm

Exterior view of Thomas Becket's Public House at Tarring in Sussex in the United Kingdom:

• pencil sketch on paper
• loose
• 28.5 x 16.1 cm
• [on sketch] 'Part of Thomas a Becket's / Tarring / Sussex.' (pencil note)

Fragment of a seat from the amphitheatre at Catania in Sicily (Italy), with measurements:

• pencil drawing on paper
• mounted
• 21.4 x 29.8 cm
• [on drawing] '2 palmi / 3 palmi meno 4 onci / 4 palmi meno 2 onci / 2 palmi 6 onci / 2 " 2 / 1 1/2' (pencil notes)
• [on drawing] 'Catania destroyed by an eruption from Monte Rose / il villaggio di Nicolosi anno 669 / Catania. Sunday august 29 1824 / Fragment of a seat found in the amphitheatre' (pencil notes)

Two women collection water from drinking fountain with weather vane:

• pencil and watercolour (blue, red, brown, orange, green) sketch on paper
• loose
• 23 x 37.3 cm

View of Boppard/Boppart on the Rhine in Germany, from hydropathic establishment:

• pencil and watercolour (blue, pink, brown) sketch on paper
• loose
• 28 x 20.1 cm
• [on sketch] 'October 1845 / Boppart / from the Hydropathic / station Dr Mayo' (pencil note)

A view of the Tiber in Rome, Italy:

• pencil sketch on paper
• loose
• 21.4 x 16.7 cm