Group and individual portraits taken by Alan Archibald Campbell Swinton Group and individual portraits, the majority of which were taken by Swinton, with ARC electric light, predominantly during the various dinner parties he hosted in his home at 40 Chester Square, London. Photographed individuals include Swinton's friends and colleagues from scientific circles. Idenitified individuals are as follows: ACS/6/1/55/1-4 Sir Oliver Lodge x4 portraits ACS/6/1/55/5-6 Randall Thomas Davidson, Archbishop of Canterbury, x2 portraits ACS/6/1/55/7-Sir William Ramsay x1 portrait ACS/6/1/55/8-11-Charles Algernon Parsons x4 portraits ACS/6/1/55/12- Harry Pitman x1 portrait ACS/6/1/55/13-Robin Houstoun and Peter Combermere x1 portrait ACS/6/1/55/14-Leon Desmarais x1 portrait ACS/6/1/55/15-Alan Archibald Campbell Swinton and C. P. Sparks x1 portrait ACS/6/1/55/16-18-Sir Charles Parsons, Alan Archibald Campbell Swinton, Sir Phillip Watts, Sir Joseph Larmor, Sir William White x3 copies ACS/6/1/55/19-E. H. Trenow, G. Morane, Ernest Roney, Leon Desmarais, Alan Archibald Campbell Swinton x1 ACS/6/1/55/20-Sir Philip Watts, Sir Charles Parsons, and Sir William White x1 ACS/6/1/55/21-Alice S. L. Swinton, Elsie Swinton, Edward H. Ebsworth, Kate M. C. Swinton, Robin Houstoun, Alan Archibald Campbell Swinton, Edith Davidson, Randall Thomas Davidson, G. S. C. Swinton x1 ACS/6/1/55/22-Reginald John Wallis-Jones, George Keith Buller Elphinstone, John Snell, Alan Archibald Campbell Swinton, John Edward Kingsbury, John Perry, Walter Judd ACS/6/1/55/23-Sir William Bragg, Sir Joseph Petavel, Sir Joseph Larmor, Sir Dugald Clerk, Mr J. Jeans (Secretary of the Royal Society), Sir Richard Glazebrook, Major P McMahon, Profesor Michelson, Charles Algernon Parsons ACS/6/1/55/24-25- Alan Archibald Campbell Swinton, Professor Michelson, Charles Algernon Parsons, rest unidentified x2 ACS/6/1/55/26-Sir Charles Algernon Parsons, Randall Thomas Davidson, and one unidentified gentleman. ACS/6/1/55/27-Sir Sylvanus Thompson, Sir William Ramsay, and A. P. Trotter ACS/6/1/55/28-Alan Archibald Campbell Swinton, holding his pocket watch, in a group portrait with five other unidentified gentlemen. ACS/6/1/55/29-30-Alan Archibald Campbell Swinton in a group portrait with seven other unidentified gentlemen. ACS/6/1/55/31-32-Alan Archibald Campbell Swinton in a group portrait with five other unidentified gentlemen. ACS/6/1/33-Alan Archibald Campbell Swinton in a group portrait with a group of eight other unidentified gentlemen. ACS/6/1/55/34-25-Photograph of two seated unidentified gentlemen x2 ACS/6/1/55/36-37-Group portrait of unidentified seven gentlemen in dinner attire. Some of these photographs appear in the album of photographs taken at 40 Chester Square [ACS/6/5]. 1909-1914