Gary Watkins wrote in 170517 MMDigest:

> I believe that there has been only one piano roll issued of "A Real
> Slow Drag" by Scott Joplin.  It was arranged by Ralph Mullins in the
> 1960s.  The roll was issued as original material on the PianoRecord
> label along with other new arrangements of rags.

Other ragtime fans making piano rolls in the 1960s were Hal Boulware
(Classics of Ragtime) and Howard Weilmuenster, both of St. Louis,
Missouri.  Either one could have arranged a new piano roll performance
of the Scott Joplin composition.

At https://www.newspapers.com/newspage/142132351/  is an article about
Weilmuenster and Boulware published in the St. Louis Post-Dispatch,
Sunday, September 15, 1963, page 207:

"Two St. Louisans are keeping alive the glory days of player pianos by
making their own piano rolls of ragtime music.  One is Harold Boulware,
a former electric organ salesman whose enthusiasm for player pianos led
him into the full-time occupation of rebuilding the old instruments.
He not only makes rolls of music but deals with piano roll collectors
as far off as Sweden and Switzerland.  The other piano roll maker is
Howard Weilmuenster, a sign painter who cuts the rolls as a hobby.

"In comparison to modem production methods, the output of both men is
quite modest. It takes Weilmuenster 8 to 10 hours, using a homemade
template and assisted by his wife, to perforate one roll.  Boulware,
using an antiquated machine [a Leabarjan] that he found in Buffalo,
N.Y., can produce eight rolls in five hours.  (Commercial firms produce
32 rolls in three minutes from their master piano rolls.)

"Both Boulware and Weilmuenster transfer ragtime tunes from sheet music
to rolls, concentrating mostly on the works of such leading composers
of the early 1900s as Scott Joplin, Joseph Lamb, James Scott, Tom
Turpin and Arthur Marshall."

Many of Howard Weilmuenster's rolls can be heard on the radio program,
"Ragtime America", hosted by Jack Rummel; see
http://www.afterfm.com/podcasts/ragtime/ragtime.xml 

From a review of the LP, "Elite Syncopations: Classic Ragtime From Rare
Piano Rolls [p]", 1987 CD Biograph BCD-102, compiled by Mike Montgomery:

"Unfortunately only about six of the original piano rolls from Joplin's
times survive and as a result the remaining rolls featured on this
release were produced by the serious collector Hal Boulware all the way
back in the 1960s who painstakingly reproduced the scores faithfully
to original print with all the i's dotted and t's crossed for
authenticity's sake."

Ref. http://rateyourmusic.com/release/comp/scott_joplin/elite_syncopations__classic_ragtime_from_rare_piano_rolls/ 

From the AMICA Bulletin, December 1986, Volume 23, Number 9:

"(For sale): Ragtime piano rolls, mint.  120 extremely rare standard
88-note Classics of Ragtime, green maple leaf label, hand produced
by Harold Boulware, Saint Louis, with Leabarjan perforator.  Only 7
of each title were produced.  Many well known titles and many never
produced elsewhere from original manuscripts. ..."

Robbie Rhodes
Etiwanda, Calif.