- 1Deakin Parker and Company trade card (YA1996.430)
c 1880, item - 2Collection of publications relating to Robertshaws' electric vacuum cleaners and Nasmyth inventions (YA1996.1834)
20th century, fonds - 3Steam Pressure Valve Drawing, Leaflet and Delivery Label (YA1996.2133)
1902-1914, fonds - 4Mollier Diagrams for Steam (YA1996.2630)
1939, fonds