moved to the Eichbaum building. Fifth avenue was the
address"of the school for over forty years.
In the latter location, another disastrous fire wiped out
the school. However, Mr. Duff was not only a great educator,
but an able financier. This combination of qualities, together
with strict integrity and firmness of purpose, enabled him
without delay to re-establish the college in its fourth location,
in the Harper building at Liberty avenue and Eighth street.
A year-book, a cloth-bound volume of eighty pages,
issued by the college while at this location, gives the names
and addresses of graduates from practically every state in
the Union. In 1904, the school was moved to the Irish building,
 where it remained for ten years. Two years after its
location at this address, Mr. Duff decided to retire from the
educational field, and on June 1, 1906, P. S. Spangler became
principal of the college.
Mr. Spangler’s educational background fitted him peculiaTly
 well for the office for which he was selected. His entire
life has been devoted to public and private school work. His
education was received in the public and normal schools of
Pennsylvania, Otterbein University and Iron City College,
where he received his technical commercial training. He was
a member of the faculty of Iron City College, and was
superintendent of the Commercial Department, for eight
years previous to his election as principal of Duff’s College.
In 1908, Duff’s College secured control of the Iron City
College, which was thereafter operated as a branch for
specialized training in Gregg shorthand and secretarial
duties and functions. In Duff’s, Graham shorthand and typewriting
 had been introduced many years previous, but the
growing popularity of the Gregg system made such a specialized
 school very desirable.
In 1914, Duff’s College removed to the second and third
floors of the Stanwix building, Penn avenue and Stanwix
street. In 1921, control of the Martin Shorthand School was
secured, and this was combined with the Iron City branch.
The growth of the school became so phenomenal, that the
combined quarters of the Iron City branch and Duff’s were
wholly inadequate, and it became necessary to seek more
extensive space. In 1922, therefore, a four-story building on