The PRR J1 was a class of 2-10-4 or "Texas" type steam locomotives with 69 in driving wheels built between 1942 and 1944. The J1 had over 95,000 pounds-force of tractive effort, plus an additional 15,000 lbf if the booster engine was used; as with many of the Pennsylvania Railroad's steam locomotives, the J1 had its headlight above the smokebox. Like the M1 the J1 had a keystone numberplate, unlike the round numberplates seen on the rest of the PRR's freight steam locomotives. Wartime restrictions forbid the design of a new engine so the PRR adopted the C&O design without change; as a result, they were equipped with Baker valve gear instead of Walschaerts valve gear, more common on the PRR. Additionally, they had radial-stay fireboxes instead of the Belpaire fireboxes seen on nearly all of the Pennsylvania Railroad's steam locomotives. Mechanically, these locomotives were identical to the C&O's T-1 class 2-10-4s; as built, the middle driver was blind to facilitate tracking on curves. With experience the railroad determined that this wasn't necessary and after shopping the middle driver was equipped with flanges.

The engine did have lateral motion devices to allow some sideways drive axle travel which did enable it to work on Pennsy curves. Other PRR changes included the curved front side cab windows, the cast pilot with drop coupler. During World War II the Pennsylvania Railroad needed heavier locomotives to pull freight and military equipment, but wartime restrictions prohibited the development of a new locomotive design. In response to this the Pennsylvania Railroad borrowed a 2-6-6-4 Class A of the Norfolk & Western Railway and a 2-10-4 from the Chesapeake and Ohio Railroad. Both locomotives underwent extensive testing, with the C&O 2-10-4 chosen to be produced. A total of 125 were built at PRR's shops in Pennsylvania, they came to be known as the PRR's "War Babies," but the J1's remained in service into the 1950s. When the Pennsylvania Railroad converted from steam power to diesel, the PRR scrapped most of them in 1958 with the exception of 25; the remaining 25 were scrapped in 1959. J1 class diagram

"9 to 5" is a song written and performed by American country music entertainer Dolly Parton for the 1980 comedy film of the same name. In addition to appearing on the film soundtrack, the song was the centerpiece of Parton's 9 to 5 and Odd Jobs album, released in late 1980; the song was released as a single in November 1980. The song garnered Parton an Academy Award nomination and four Grammy Award nominations, winning her the awards for "Best Country Song" and "Best Country Vocal Performance, Female". For a time, the song became something of an anthem for office workers in the U. S. and in 2004, Parton's song ranked number 78 on American Film Institute's "100 years, 100 songs". The song was accompanied by a music video that featured footage of Parton and her band performing, intercut with clips from the film; the song 9 to 5 was written for the comedy film 9 to 5, starring Jane Fonda, Lily Tomlin, Parton in her film debut. The song—and film—owe their titles to 9to5, an organization founded in 1973 with the aim of bringing about fair pay and equal treatment for women in the workplace.

The song is featured in a musical theater adaptation of the film, featuring a book by the film's original writer, Patricia Resnick, 20 additional songs written by Dolly Parton. 9 to 5 began previews in Los Angeles on September 9, 2008, played on Broadway at the Marquis Theatre from April until September 2009 before touring. In 2012, a UK theatre tour of "9 to 5" got underway. A few months before Parton's song and the film, Scottish singer Sheena Easton released a single called "9 to 5" in the UK; when Easton's song was released in the U. S. the following year it was renamed "Morning Train" to avoid confusion. Easton's single reached the number one spot on the Billboard Hot 100 Chart three months after Parton's song left that spot. Despite similar titles, the two songs are different in lyrical themes. While Parton's song features a working woman, Easton's song features a passive woman waiting around at home all day. Although the Parton recording only reached No. 47 in the UK, it remains a popular song on radio and in nightclubs through Britain and was spliced between "Independent Women Part 1" by Destiny's Child and "Eple" by Röyksopp for the Soulwax album As Heard on Radio Soulwax Pt. 2.

"9 to 5" reached number one on the Billboard Country Chart in January 1981. In February 1981, it went to number one on both the Billboard Hot 100 and the Adult Contemporary chart, respectively, it became her first No.1 entry on the former. The song was certified Gold in February 1981, indicating shipment 500,000 of physical copies, it was certified Platinum on September 25, 2017. It has accrued 500,000 digital downloads as of February 2019 in the United States after it was made available for download in the 21st century; the song peaked at No. 47 in the UK singles chart in 1981. It has sold 303,511 digital copies in the UK as of July 2014; as of 2017 it is Parton's biggest download in the UK, totaling 340,800, while it has been streamed 8.46 million times. This song is one of the few Billboard chart songs to feature the clacking of a typewriter. Parton has stated in a number of interviews that when she wrote the song, she devised the clacking typewriter rhythm by running her acrylic fingernails back and forth against one another.

With "9 to 5", Parton became only the second woman to top both the U. S. country singles chart and the Billboard Hot 100 with the same single. This song is the 500th song to top the Billboard Hot 100. U. S. Senator Elizabeth Warren has used the song at campaign appearances during her 2020 presidential campaign, with it playing when she takes the stage. Reacting to the song's use, Parton’s manager Danny Nozell said, “We did not approve the request, we do not approve requests like this of political nature.” The song was covered by Alvin and the Chipmunks in their 1982 album The Chipmunks Go Hollywood. The song was covered by an unknown beaver singer in the film Sing. In 2017 British singer Robbie Williams covered the song on his album Under the Radar, Vol. 2. Dolly Parton - lead vocals, nails Jeff Baxter, Marty Walsh - guitars Abraham LaBoriel - bass Larry Knechtel - piano Richard Schlosser - drums Leonard Castro - percussion William Reichenbach - trombone Tom Salviano - saxophone Kim S. Hutchroft - baritone saxophone Jerry Hey - trumpet Denise Maynelli, Stephanie Spruill, Marti McCall - background vocals Denise Maynelli DeCaro - vocal contractor The December 11, 2010 episode of Saturday Night Live features a Digital Short titled "Stumblin'", a music video whose song parodies "9 to 5".

The video chronicles the adventures of a man stumbling his way through New York City. In a key plot point of a 2019 episode of The Orville, "Sanctuary", an alien feminist who hears the song uses it to empower her call for protection for her people; when giving a key speech on the subject, she quotes from the song as poetry, ending with "I swear sometimes that man is out to get me". The song is featured in the 2018 film Deadpool 2. In the initial scenes, the title character goes through a montage of mercenary missions with the song playing in the background. List of Billboard Hot 100 number one-singles of 1981 9 to 5 lyrics at dollyon-line.com Lyrics of this song at MetroLyrics