Contains correspondence from various institutions, societies and organisations, including: various universities; the British Association for the Advancement of Science; the Cambridge University Natural Science Club; Royal Scottish Museum; British Cattle Breeders' Club and others, demonstrating the wide range of organisations at which Waddington was invited to lecture.

The letter thanks Ewart for the donation to the Royal Scottish Museum of a Mallard duckling wing showing the succession of two down plumages and feather plumage.

Paper copies of a portfolio set of plans (60cm x 84cm), at 1:200 and 1:250 scale, of the proposed National Museum of Antiquities of Scotland in Edinburgh. There are 8 floor plans, 2 perspective drawings, 2 site plans and an elevation. The senior architect for the project was R Saddler and the project architect was JA Leask.

Paper copies of a portfolio set of plans (A1 size), at 1/8" to 1' scale and 1' scale, of the proposed National Museum of Antiquities of Scotland and extension to the Royal Scottish Museum in Edinburgh. There are 8 floor plans, 4 sections and a structural plan. In addition there is a copy of a plan entitled "Chambers Street Museum, survey of west elevation" by the Ministry of Buildings and Works, dated 1970.

Chambers Street development consists of:

Plans of proposals for the Museum of Scotland consists of:

This series contains material relating to the "Africa in the Attic", "Colours of Africa" and "Events relating to the Colours of Africa Exhibition" events organised by the Royal Museum of Scotland.

Papers copies of the original linen floor plans (60cm x 84cm) for the ground, first floor and roof of the Royal Scottish Museum in Chambers Street in Edinburgh. An elevation to Chambers Street, along with a cross-section are also included.

Sesquicentennial events consists of: