The babysat baby in this episode is Alan Rice. Submitted by Alan Rice, 9/11/2001. Picture here.

Phone Numbers: Joe Kelly wants to make a call from Paul’s car phone. Paul picks up the phone and dials the operator. Joe gives him the number: 271-2399. Paul repeats the number into the phone then exclaims “That’s Perry’s number!” Submitted by daveb, 11/23/2010.
+ Apparently Perry's number has changed over the years. It used to be MAdison 5-1196. alan_sings 12/6/2012.
+ Perry's number didn't change, the MAdison 5-1196 number was last mentioned in episode 229. He probably had more than one phone number at his suite. In episode 17 TCOT Sunbather's Diary (the first time the above number was given for Perry) Mr. Mason called his office from a pool hall pay phone and the last two numbers he dialed were one - one. Another number for Perry's office will be given in episode 244 (555-3549). Added by H. Mason 4/10/15
++ Perry gave his UNLISTED number to a witness who tore the card up (Demure Defendant). Mike Bedard 4.14.15

Uncredited Actors / Sightings: The health inspector interviewing a bedridden man in the hospital is none other than Don Anderson. Next he interviews a man in his hospital bed and then another man sick in bed at home—a man who happens to be Distinguished Gentleman #1! Submitted by gracenote, 4/8/2011.
+ In the courtroom gallery, Quiet Old Man #1 has ensconced himself up front for a good view of the proceedings. On the prosecutor’s side sits a rather indistinct but keenly interested Pencil Mustache Man, while tucked away in the back of the defense side is the Little Old Lady in a Hat. And luckily, Distinguished Gentleman #1 got over his amebic dysentery in time to observe the hearing. Submitted by gracenote, 4/9/2011.

Although credited in the the available syndication print, Ray Collins (Lt. Tragg) does not appear, again because of his illness. And of course, as the Summary indicates, neither does Raymond Burr (Perry Mason). Submitted by gracenote, 4/8/2011.

Location: The porch of a house with the address of 1423 serves double duty. It's used for a scene here as well as a scene in “TCOT Two-Faced Turn-A-bout.” I don't know what street this was but the 1400 block would be just a few blocks north of the studio in Hollywood so it wasn’t far. Submitted by Eric Cooper, 28 April 2011.
+ Jim Davidson's "The Perry Mason Book" identifies the location as 1432 North Sycamore Avenue, directly behind the 1416 North La Brea Avenue studios where PM was being filmed...MikeM. 6/12/2018

Location: Speaking of double duty with locations, here is another one. The house the rich old lady lives in is the same house as the two sisters in “TCOT Nebulous Nephew.” Maybe it’s a timeshare. Also on the nighttime scenes the porch light is in exactly the same place. The house is probably in Hancock Park which is again close to the studio. Submitted by Eric Cooper 28 April 2011.
+ The porch also appears 37 minutes into “TCOT Bluffing Blast.” Submitted by Eric Cooper, 9 June 11.

Location: I found the house! It’s at 357 Lorraine Blvd in the Hancock Park section of Los Angeles. It was originally built in 1898 for Issac Newton Van Nuys who developed much of the San Fernando Valley. The house is about 12,000 sq ft and looks exactly the same. Even has the same unique porch light after 50 years. Submitted by Eric Cooper, 6 June 2011. Pictures here.

Paul's Phone: For the sixth time Paul's car phone was used (see episodes 107, 157, 191, 204 and 214) Submitted by H. Mason 4/10/15

Murder Method: For at least the thirty-second time a murder victim was stabbed. Submitted by H. Mason 4/10/15

Michael Connors: had his own CBS series, Mannix, which ran from 1967 to 1975. On that series the first name of his character was Joseph. Submitted by H. Mason 5/11/15
+Mike Connors, born Krekor Ohanian on August 15, 1925, passed away 26Jan2017 at the age of 91. (The same day as Barbara Hale.)
++This was the only PM appearance for Mike Connors, who not only passed on the same day as Barbara Hale, but passed in Tarzana not far from Barbara Hale's home in Sherman Oaks...MikeM. 1/31/2017

TCOT Curious Coffee Set: Even though Joe Kelly makes himself right at home, handing Paul a shovel and directing him to search the soft ground and dig on the Jaris property, as well as in Perry's office, Della shows her loyalty to Perry by serving Joe's coffee, not from the Curious Coffee Set, but from the alternate coffee set. jfh 31Jan2017.
+ That's because the Curious Coffee Set is at the Duchess's house, where she offers a cup to Dr. Max Taylor, and he refuses. The Duchess pours hers from an elaborate silver samovar, unlike any coffee server heretofore seen in the entire series. Also, the so called "alternate set" mentioned by jfh consists of ugly plastic West Bend Thermo Serv insulated mugs with black liners and gold-coloured anodized aluminum exteriors -- not a proper service set at all! Submitted by catyron, June 20th, 2018

Just watched "The Shoplifters" episode of "The Andy Griffith Show" - the Curious Coffee Set is available in Mayberry at Weaver's store! Oh, and the shoplifter was played by PM favorite Lurene Tuttle. DOD 02/21/19

This is the second of two PM appearances for Jeff Donnell, who was sometimes billed as Miss Jeff Donnell. She supposedly took the nickname Jeff from her favorite cartoon character, the shorter man of "Mutt and Jeff"...MikeM. 2/6/2018
Jeff Donnell is in the “The Blue Gardenia” in which the murder victim is played by Raymond Burr. Also in the movie are PM regulars Frank Ferguson and Richard Erdman. DOD 04/17/23

This is the only PM appearance for Patricia Morrow, the daughter of a Los Angeles attorney. Patricia Morrow received 378 credits for her recurring role of Rita Jacks on the primetime soap opera "Peyton Place"...MikeM. 5/8/2018

This is the second of two PM appearances for prolific character actress Anne Seymour. She worked until 1988, the year of her passing. Her final film, "Field of Dreams" was released in 1989...MikeM. 6/12/2018

This is the fifth PM appearance for Maurice Manson, movie, stage and TV actor.