The collection is arranged in the following series and subseries:
Series 1: Madame Robert Proust gathering of Marcel Proust materials (acquired through Henri Lefebvre)
Series 2: Proust to Bibesco (Proust 1)
Series 3: Proust and Hauser Correspondence (Proust 2 and 2A)
-Subseries 1: LH (Hauser to Proust--Proust 2)
-Subseries 2: Hauser (Proust to Hauser--Proust 2A)
Series 4: Proust to Grandjean, Lauris, and others (Proust 3)
Series 5: Proust to Goyau, Daudet, Montesquiou-Fezensac, and others (Proust 4)
Series 6: Correspondence to Proust (Proust 5)
Series 7: Items by Proust (Proust 6-Proust 86)
Series 8: Montesquiou-Fezensac to Proust (Montesquiou 2-6)
Series 9: Correspondence from Walter Berry to Marcel Proust (Proust 87)
Series 10: Additional Accruals (Proust 88-93)
-Subseries 1: Correspondence with Blanche, Daudet, Dreyfus, Lemaire, and Schiff to Marcel Proust (Proust 88-92)
-Subseries 2: September 2013 accrual (Proust 93)
Series 11: Proust's milieu
-Subseries 1: Jacques Brehant and Amelie Bessiere
-Subseries 2: Friends and acquaintances writing for newspapers
-Subseries 3: Comtesse Greffulhe
-Subseries 4: George Boyer
-Subseries 5: Mary Wooster
-Subseries 6: Francois Selz collection of Leon Pierre-Quint and Henri de Montherlant
-Subseries 7: Pierre-Quint manuscripts
-Subseries 8: Fragiles
-Subseries 9: Daudet family