Note: '; “...glass blower...”

Note: '; “...glass blower...”

Note: '; “...Pittsburgh Plate Glass...”

Note: '; “...stained glass artist...”

Note: '; “...Pittsburgh Glass Company...”

Note: '; “...Pittsburgh Plate Glass...”

Note: '; “...Pittsburgh Plate Glass Co....”

Note: '; “...Pittsburgh Plate Glass Company...”

Note: '; “...Hires-Turner Glass Co....”

Note: '; “...Pittsburgh Plate Glass Co....”

Note: '; “...President Flat Glass Workers of America...”