A repurposed Lett's diary for 1936 measuring 7.5 cm x 11.5 cm, containing measurements, notes, calculations and drawings on a variety of engineering and milling matters including the mills listed at 'Place access points' below.

Reference is made to a number of sea or tide meals including unidentified ones at Denham, Wadebridge and St Austell, Cornwall and also to 'Butshead Tide Mill' [Budshead?] at St Budeaux. There are also 8 pages of notes under the headings 'Beech' and 'Stock' detailing the equipment/set-up within two unidentified mills. A further unidentified mill mentioned is 'Little Bentley Mill'.

Further notes on tide mills record that, 'porpoises came up at Barrow Hill Tide Mill, Abridge [Heybridge?], Maldon Essex'. A record is also made of '7 Tide Mills on North coast of Norfolk in the Burnhams'.

A repurposed Army field message book labelled, "Cambs, Essex, Suffolk, 1927".

1. The first section of the notebook begins with a schedule of windmills to be visited in Cambridgeshire noting whether a photo is required and who is to be met. Notes, measurements and drawings are taken at each of the identifiable windmills listed at "Place access points" below.
2. The middle section of the notebook, written in a brown-coloured ink, plots co-ordinates/directions for various places (possibly mill locations) throughout Middlesex, Hertfordshire and Essex. This section of the notebook also contains a copy of a 1902 letter from Press Bros. of Great Yarmouth to Sidney Russell of Windmill Hill, Cranbrook, Kent, giving details as to a particular mill's construction/workings.
3. The next section of the notebook features 56 pages of notes from Wailes' four day trip to Norfolk, Suffolk and Essex in June 1927. Notes, measurements and drawings were taken at each of the identifiable windmills listed at "Place access points" below. Amongst the notes are two sections of narrative diary entries from the trip (including an interlude involving a hedge and a ripped pair of breeches). Noting the recent (1926) loss of Fressingfield, Wailes observes that, "working mills must occupy my time. Derelicts must be content with photograph only".
4. The penultimate section comprises 15 pages of lists of windmills in Sussex, Suffolk, Surrey, Essex and Kent.
5. The last section is a detailed account of a visit to Thurston, Rougham Common and Pakenham mills on 15 December 1934. Wailes' notes for Thurston Mill are marked, "Examined with Paisley", recording that the mill had been moved from about 1.5 miles nearer Pakenham about 200 years ago and that a mill had been on that site in James II's reign.

A repurposed Lett's diary for 1930 measuring 7.5 cm x 10 cm, most of the pages being blank, but containing a list of the Suffolk mills itemised at 'Place access points' below, with brief descriptions for each one. These include details of the current mill owner (where applicable) and their condition (or date of demolition, if applicable).

Deptford Tide Mill; Holton; Stanton; Wenhaston; Sweffling; Westhall; Peasenhall; Tunstall; Halesworth; Yorkshire Brickyard Pump; Stradbroke; Long Green; Earl Soham; Saxtead Green; Pettaugh; Stanton; Friston; Parham Mill Green; "On the dunes nr Walberswick"; St Michael; copies of E M Gardner horse engine photograph; Holywell Mill, Oxford; millstone works near Domme, France, Aparil 1926; Ings Bobbin Mill, Staveley, 1926 (Mitford Abraham photograph); Malt Mill and Saw Mill, Greenodd, N Lancashire, 1926 (Mitford Abraham); Viver Mill, Hincaster, Cumbria (E M Gardner photograph); Skelwith Bridge Saw Mill, Cumbria (E M Gardner photograph); Wrawby, Lincs (Martin Watts photograph).