Dr Walker, a medical practitioner, observed and treated a variety of people for an array of illinesses, ranging from dental problems to venerial disease during his travels and professional life, some of which is documented in his diaries. He and Mollie, also observed and described some Australian Aboriginal ceremonial activity and associated materials.

A loose leaf diary detailing WD Walker's daily life including study, medical duties, travel and personal routine. This item covers locations around Adelaide, Spencer Gulf, and McLeay South Australia.

Significant events are documented as follows:

• hopeful of having photos published in the Observer which will pay photographic expenses 12 January 1922
  
  
• Register office accepted 35 photos from Oodnadatta and West Coast (published 25 March 1922) for publication in The Observer 14 March 1922
  
  
• Mollie, 's music and career highlights published in the saAdvertiser 15 March 1922
  
  
• moved to Glen Osmond 25 November 1922
  
  
• purchased new Ford car, 21 December 1922
  
  
• Honours Bachelor of Science (BSc) exams 16 March 1923 (admitted to degree 11 June 1923), moved to 65 2nd Avenue St Peters with Mrs Marchant 6 May 1923
  
  
• redicular and peridental abscess 20 November 1923
  
  

References to photographs taken include:

• ceremony photographs by flare at night, buckjumping, donkey races 1 January 1922. This item is restricted.
  
  
• ceremony 2 January 1922. This item is restricted.
  
  
• Dinner Time Creek races, buckjumping, Pompey (Australian Aboriginal man) 3 January 1922
  
  
• horses, camels and men at lunch and resting at Ramyard Creek 4 January 1922
  
  
• cattle drinking near Imbitura Bore, Billy the camel drinking from quart pot 9 January 1922
  
  
• cattle in water at Arkringa Creek, Sandy hanging onto a camel's tail 12 January 1922
  
  
• camels and quart pot, cutting out the 'fats', bucking, donkeys 13 January 1922
  
  
• rabbit 14 January 1922
  
  
• John and Dick leading camel, Dixon at poppet head draining water Ethel Well, Tom Brockman 17 January 1922
  
  
• goats, bull camel, Mrs Branson and kids, Ruby (Australian Aboriginal woman) 19 January 1922
  
  
• landing gas cylinders at Price Island, mutton birds, seals, porpoise 9 February 1922
  
  
• sleeping seals St Francis Island, Mr Arnold, Francis 11 February 1922
  
  
• penguin scratches made on rocks at St Francis Island, group eating -water melons, smoking out lizards, snakes and bandicoot, mutton birds 12 February 1922
  
  
• Flinders Island lighthouse, Arnold's baby 15 February 1922
  
  
• Cape Barren geese and pomeranian ,dog, 18 February 1922
  
  
• WD Walker and Mollie, at Victor Harbour 15 April 1922
  
  
• curlews, possoms, pigeons, rabbits 18 April 1922
  
  
• microphotos of the skin 9 July 1922
  
  
• microphotographs of a mosquito 23 July 1922
  
  
• running the hares at Yongala ,dog, races 26 August 1922
  
  
• fox genito-uriny tract, Walker in eagle hawk's nest, flash light photographs of hut 31 August 1922
  
  
• top knot pigeon 1 September 1922
  
  
• moonlight photos of beach and spit at Port Vincent 31 May 1923
  
  
• traveled via Karatta, to Adelaide 1 June 1923
  
  
• Cliff's pup, Jacks ,dog, at Mackara (Whydown) and sheep yards 22 August 1923
  
  
• our camp and us at breakfast (WD Walker and Lank) at Teetulpa dam 24 August 1923
  
  

Individuals, subject matter and locations noted include:

• Monkey (Australian Aboriginal man, Mr Ferguson, Mr Hobbs, Tom Brockman, Ly Underdown 3 January 1922
  
  
• abundant rabbits, parrots, galahs and crows, ants, 6 January 1922
  
  
• Andy Ferguson 7 January 1922
  
  
• Jack Mitchell, Jack Ludgate 8 January 1922
  
  
• Capt White (AA 365) 9 January 1922
  
  
• Jack Ludgate, Mr Underdown 10 January 1922
  
  
• Mrs Branson, Larry O'Tool, George Flemming 15 January 1922
  
  
• turkey 16 January 1922
  
  
• Khalick (Afghan), camels, Tommy Maloney, Tom Brockman 19 January 1922
  
  
• Tommy Maloney, Monkey (Australian Aboriginal) man 22 January 1922
  
  
• Mark Westmacott, Mrs Underdown 23 January 1922
  
  
• Dr Schafer 25 January 1922
  
  
• Mollie, Mrs Alexander, Aunty and Nell and Andy, Chas and Doll 26 January 1922
  
  
• Puck and Kim 30 January 1922
  
  
• SS Wandana 7 February 1922
  
  
• SS Conqueror, Capt Justice 8 February 1922
  
  
• Mr Arnold, Francis 11 February 1922
  
  
• tommy ruff 12 February 1922
  
  
• Wood Jones (AA 379), rats, Mr Bevan 13 February 1922
  
  
• rock wallaby, flathead, snook, gropher 16 February 1922
  
  
• Capt Justice, Mr Waddy 18 February 1922
  
  
• Mollie, and Sid 25 February 1922
  
  
• Ly Underdown, Mrs Mitchell 28 February 1922
  
  
• Mollie, Mrs Alexander 3 April 1922
  
  
• Reg Trigg 10 April 1922
  
  
• Miss Wilcocks 13 April 1922
  
  
• Mollie, Jno Tugwell 14 April 1922
  
  
• Chas and Doll married, Mollie, 1 May 1922
  
  
• Capt Weston of the SS Cumberland 21 May 1922
  
  
• Doc Tassie, Dr and Mrs Leitch 23 May 1922
  
  
• Mrs Tassie, Mrs Morgan, Bill Matthews 26 May 1922
  
  
• Sonny and Ma, Doris May, Mr Hockey, Miss Helen Yule, 27 May 1922
  
  
• Mr Hockey 29 May 1922
  
  
• Sonny, Mr Hockey 30 May 1922
  
  
• Mrs Wright, 31 May 1922
  
  
• Mrs Leitch, Mollie, Mr Hockey 1 June 1922
  
  
• Uraidla, Sonny, Dr Leitch 2 June 1922
  
  
• Win Alexander, Mollie, 3 June 1922
  
  
• Tom Leitch, Mollie, 4 June 1922
  
  
• Sir Ross Smith, Sir Douglas Mawson, Prof. Kerr Grant 15 June 1922
  
  
• Helen Yule, Dorris May, Mr Robinson (microphotographer), Aunty Nell 9 July 1922
  
  
• Luff, Wood-Jones (AA 379) 23 July 1922
  
  
• Gwen, Sonny, Mrs Cresswell, Muriel, Kath, Mrs Alexander 13 August 1922
  
  
• Wood-Jones (AA 379), Mr Sutton, Capt White (AA 365), McCallum (explorer?), Herbert Basham 18 August 1922
  
  
• Andy, Nell, Spen Jones, Len 20 August 1922
  
  
• George Napper, Chas and Doll at Yatina, Wacko 26 August 1922
  
  
• Peterborough, Mr Stelle at Whydown Cliff, 29 August 1922
  
  
• Martin Glynn (prospector and trapper), Wacko 30 August 1922
  
  
• Capt Fowler, Mr and Mrs Mallyon discussing finances 4 September 1922
  
  
• Mrs Alexander, Mollie, 30 October 1922
  
  
• Les Hannan 15 November 1922
  
  
• Mrs Pratt, Jack Risler, Mollie, 6 December 1922
  
  
• Miss Simpson, Eric Martin, Miss Longmore, Mr Mallyon, Mrs Alexander 10 December 1922
  
  
• Mollie, Mrs Alexander 28 December 1922
  
  
• Puck and Kim VH , Mollie, 3 January 1923
  
  
• Mollie, 16 March 1923
  
  
• Mrs Pratt 6 May 1923
  
  
• Chester Moreland, Dunn, Mrs Marchant, Win and Viv Marchant, 29 May 1923
  
  
• Mrs Cameron, Mrs MacFarlane 30 May 1923
  
  
• Mollie, 26 June 1923
  
  
• Syd Alexander, Mollie, John Rister, Syd Alexander, Mr Moyle, Mrs Alexander 26 June 1923
  
  
• Haskard, Nell 18 August 1923
  
  
• Chas and Doll 19 August 1923
  
  
• Andy, Haskard, Dr Goode (Peterborough Hospital) 20 August 1923
  
  
• Cliff, Lanc, Jack Foza 21 August 1923
  
  
• Lank 22 August 1923
  
  
• Dr Goode, Sister Bell, Con and Flora Neumann 26 August 1923
  
  
• Miss Sketheway matron Queens Hospital, Sister Day, Dr Stanley, Sir George Murray regarding application for Rhodes Scholarship 27 August 1923
  
  
• Dr Gilbert, Mrs Dick Wombat Australian Aboriginal woman 11 September 1923
  
  
• Mr Parrish, Mr Delmont, The Observer 29 September 1923
  
  
• Mrs Alexander and Mollie, Puck and Kim VH 27 December 1923
  
  
• undated penciled note regarding Mollie, and Charlie engagment, hand drawn map, of Australia showing Walker's out back travels by car, and train dated 1924