Yes, but check the date. A Pitman 2000 passage will be nearly identical in English vocabulary to a Gregg passage. The shorthand outlines differ, but you can ignore the printed outlines and just use the longhand text for dictation.
Here is a short business letter you can copy into a PDF or print directly: pdf practice shorthand dictation passages free
Every shorthand learner hits "The Wall"—typically between 60 and 80 WPM. Here is how targeted solves this: Yes, but check the date
While famous for paid resources, the "Free" section of Teachers Pay Teachers occasionally contains high-quality shorthand dictation worksheets designed by vocational teachers. pdf practice shorthand dictation passages free
: A full textbook on Internet Archive containing supplemental exercises for mastering principles. 700 Common-Word Reading & Dictation Exercises