1 · Position
⚑ The dates are commonly misreported and worth stating precisely. The shop was founded in 1838 by the Videau brothers. Aristide Boucicaut became a partner in 1852 and rebuilt the business: fixed prices in place of haggling, guarantees allowing exchange and refund, far wider stock, newspaper advertising. Revenue went from 500,000 francs in 1852 to five million by 1860. A much larger building followed at 24 rue de Sèvres in 1869, with Gustave Eiffel among those who worked on it. Sources that give 1852 or 1869 as the founding are describing the transformation and the building.
2 · Why it is in the Library
Because Boucicaut invented hospitality inside retail, and the details are the argument. ⚑ He did not invent the fixed price: Echigoya — now LHL-S-168 Mitsukoshi — announced cash on the counter and one price for everyone in 1683, a hundred and sixty-nine years before Boucicaut became a partner here. The two arrived at it independently and the Library corrects its own earlier claim rather than leaving it standing. A reading room for husbands while their wives shopped. Entertainment for children. Six million catalogues posted. By 1880 half the staff were women, with the unmarried among them housed in dormitories on the upper floors. The store was not a place to buy things but a place to spend the day — which is the proposition every entry in this group, and a good many hotels, has made since.
3 · What it produced
Printemps in 1865 — LHL-S-175 Printemps — founded by a former Bon Marché employee. La Samaritaine in 1869 — LHL-S-174 La Samaritaine — by two people trained here. Galeries Lafayette in 1895. Harrods took the Parisian grand magasin as its model in an 1892 renovation. La Rinascente, De Bijenkorf, KaDeWe, El Corte Inglés, Selfridges: all downstream.
4 · Candour
Zola set *Au Bonheur des Dames* in a store of this kind in 1882 and made it a symbol of a new technology both improving society and devouring it — the criticism arrived with the invention and has never left. The dormitories that housed unmarried women staff were a form of control as much as a benefit, and the Library records both readings. ⚑ Aristide Boucicaut is not in Part IX; on the Library’s own test he belongs there, and the anchor now exists.