William James' [The Letters of William James]; Roback's article "The Scope and Genesis of Comparative Psychology" in Journal of Philosophy, Psychology & Scientific Methods; Hickson's course on "Some Problems of Comparative Psychology"; Roback's "Mentality Tests"; William D. Tait; Harvard; Hickson's students; Immanuel Kant's Critique of Pure Reason; William Caldwell; McGill Faculty of Arts; McGill Principal [Sir Arthur Currie]; reaction to Hickson's remarks on religion; William McDougall; Ralph B. Perry; Reinhold Hoernlé; Hickson on William James; Henri Bergson; Alois Riehl; Wilhelm Wundt; Hickson's address on Albert Einstein's philosophy of relativity; McGill affairs.

Hickson's vacation in the Canadian Rocky Mountains (Glacier, B.C.); Dr. Stone (President of Purdue University); Ralph B. Perry; scholarship at McGill; Edisonian Intelligence Tests; Bertrand Russell; Albert Einstein's lectures at Princeton; Hickson's address "Does Einstein's theory support Idealism?"; Dr. Waitzmann (scientist and Zionist); Sir Arthur Currie; Roback's marriage; James W. Bridges.

Roback's teaching salary [at Radcliffe College?]; McGill Centennial Re-Union; James R. Angell; Hickson's address on Einstein; books on relativity theory; Hickson's lecture on the "Greatness of Spinoza"; Hickson's course on "Main Currents of Contemporary Philosophy".

Roback's article ["Subjective Tests vs. Objective Tests"] in Journal of Educational Psychology; Hickson's courses including one on "Nietzsche, Bergson and the Pragmatists"; Roback's employment; Roback's marriage; Gordon Laing (McGill Dean of Arts); William D. Tait; James W. Bridges; Hickson considers resigning from McGill; "mental quality" of McGill students; Bernard Bosanquet's The Meeting of Extremes in Contemporary Philosophy; books on relativity theory; Albert Einstein; Alfred N. Whitehead.

Roback's article "Intelligence and Intellect" [in Journal of Philosophy]; Roback's employment.

Roback's employment (potential appointment at McGill); William Caldwell; William D. Tait; Herbert Langfeld; James W. Bridges.

Roback's employment (potential appointment at McGill); William Caldwell; Morin-Walter legal case at McGill; expulsion of James McKeen Cattell at Columbia (1917); Hickson's course on "Main Tendencies in Contemporary Philosophy; Roback's article "American Psychology" in Literary Review (New York Evening Post); William D. Tait; Alois Riehl; James B. Pratt.

Roback's article "Intelligence and Behavior" in Psychological Review; William D. Tait; Behaviorism; Hickson on intelligence; Ralph B. Perry; McGill Philosophy Department affairs; William Caldwell; Hickson's course on "Logic and Introduction to Philosophy"; De Silva (?); "mental decline" of McGill students; Morin-Walter legal case at McGill.

Roback's article "Intelligence and Intellect" in Journal of Philosophy; William Caldwell; Hickson's trip to Europe.

William D. Tait; Hickson's trip to Europe; Prof. Lafleur (?); Henri Bergson's Duration and Simultaneity with Reference to Einstein's Theory; William Caldwell; Hickson's courses.