Isaack was a contractor who did sidewalk work between 1927 and 1935. He typically worked with H. H. Heuckendorf. Sometimes his name is abbreviated to WI for William Isaack.

HEUCKENDORFF & ISAACK JUNE 5 1920

Lat/Long44.5731041,-123.27257379999999
Address620 Northwest 17th Street Corvallis OR 97330 USA
InscriptionHEUCKENDORFF & ISAACK JUNE 5 1920
CommentsHeavy moss cover. The date could easily be wrong.

H H H & WI JULY 17 1931

Lat/Long44.56999745333702,-123.26961938773157
Address403 Northwest 13th Street Corvallis OR 97330 USA
InscriptionH H H & WI JULY 17 1931

HEUCKENDORFF & ISAACK NOV 30 1922

Lat/Long44.5712456,-123.2669224
Address1060 Northwest Polk Avenue Corvallis OR 97330 USA
InscriptionHEUCKENDORFF & ISAACK NOV 30 1922
CommentsSmall font

HEUCKENDORFF & ISAACK OCT 20 1927

Lat/Long44.57330839547488,-123.2711552478504
Address1500-1598 Northwest Taylor Avenue Corvallis OR 97330 USA
InscriptionHEUCKENDORFF & ISAACK OCT 20 1927

HEUCKENDORFF & ISAACK OCT. 29 1927.

Lat/Long44.562980510605996,-123.26898130224896
Address404 Southwest 9th Street Corvallis OR 97333 USA
InscriptionHEUCKENDORFF & ISAACK OCT. 29 1927.

RFF & ISAACK 1927 (Left tile replaced. Right tile destroyed by miscommunication of project managers around 24 July 2016)

Lat/Long44.57377908996136,-123.28341183680533
Address602 Northwest 29th Street Corvallis OR 97330 USA
InscriptionRFF & ISAACK 1927 (Left tile replaced. Right tile destroyed by miscommunication of project managers around 24 July 2016)

HEUCKENDORFF & ISAACK NOV 18 1929

Lat/Long44.5718789,-123.26660600000001
Address629 Northwest 11th Street Corvallis OR 97330 USA
InscriptionHEUCKENDORFF & ISAACK NOV 18 1929

HEUCKENDORFF & ISAACK FEB 25 1934

Lat/Long44.5725332,-123.2675724
Address706 Northwest 12th Street Corvallis OR 97330 USA
InscriptionHEUCKENDORFF & ISAACK FEB 25 1934
CommentsCovered with dirt right now. This should be on 12th St.

HEUCKENDORFF & ISAACK JUNE 10 1935

Lat/Long44.5725201,-123.26758589999999
Address1201-1261 Northwest Taylor Avenue Corvallis OR 97330 USA
InscriptionHEUCKENDORFF & ISAACK JUNE 10 1935
CommentsOn Taylor St.

HHH & WI 8-3-37

Lat/Long44.5709689,-123.2822646
Address2750-2758 Northwest Short Street Corvallis OR 97330 USA
InscriptionHHH & WI 8-3-37
Comments3rd tile from crosswalk, next to power pole

H.H.H. & WI AUGUST 11 1937

Lat/Long44.57167597626758,-123.2857363116741
Address345 Northwest 31st Street Corvallis OR 97330 USA
InscriptionH.H.H. & WI AUGUST 11 1937

H H H & WI MAY 23 1938 (Broken tile after inscription)

Lat/Long44.5702991463182,-123.27161628522587
Address335 Northwest 15th Street Corvallis OR 97330 USA
InscriptionH H H & WI MAY 23 1938 (Broken tile after inscription)
Comments3rd tile back from crossing sidewalk