“…Duke de Bassano.”

SIMS, J. Marion, (1885). The Story of my Life, ed. by H. Marion-Sims. D. Appleton & Co: New York, p. 333.

“…Maximilian and Carlotta.”

See “…Maximilian and his wife, Carlotta,” above.

Sims makes no mention of Maximilian and Carlotta, but if Bigelow’s account is accurate (and there is no reason to suspect it is not), then Sims must have gained their trust at some point. His fortnight at St. Cloud is as likely a possibility as any other, as this was the year when Louis Napoleon would offer him the throne in Mexico, which Maximilian would assume the following year.

“…the grand cascade of Antoine Le Pautre…”

This view of the cascade hangs at St. Cloud today, and the perspective is roughly from the Seine. Paris would be to the immediate rear.

“…the empress’s personal library…”

https://le-bibliomane.blogspot.com/2008/09/prsentation-du-bibliomane-moderne.html

“…Winterhalter’s famous portraits…”

“…La Mort de Madame, Duchesse d’Orléans.

La Mort de Madame, Duchess d’Orleans hangs in St. Cloud today.

“He delivered the emperor’s message…”

See “…Union victories were exaggerated,” above.

“…succeeding in befriending…”

See “Sims marveled…,” above.

“…Rue de Surène.”

“Reminiscences of Dr. J. Marion Sims in Paris,” Edmond Souchon, Medical Record, Vol. 46, No. 23, December 8, 1894, p. 707.

“…southern ships had been granted port access…”

See “…provoked strong remonstrances...,” above.

“…an act of strategic duplicity.”

My speculation (about Sims’s speculation—see “Sims marveled…,” above) about Napoleon’s motives here are based on having examined many documents at national archives in Paris and Washington D.C., and the private archives of William Seward and Hentry Shelton Sanford in Rochester, NY, and Sanford, FL, respectively.