In March 1881, Edward DeGroff staked claim to Lots 6 and 7. He came to Harrisburgh, later renamed Juneau, to represent the Northwest Trading Company - the first retail store in the settlement.

In June 1881, DeGroff became the first postmaster of Harrisburgh. In addition to his postmaster and store clerk responsibilities, DeGroff also served as deputy to the District Recorder, Colonel Richard Dixon (DeArmond 1967).

C.W. Young, a Juneau contractor and hardware store owner, owned property during the early 1900s.

John Marshall and Lena Kron-Marshall, long-time Juneau residents, owned both lots for many years but resided on West Sixth Street (Daily Alaskan Empire 1940).

The Elton and Allan Engstrom Building was built on Block 6; Lots 6-7 at 111-113 West Third Street. It faces north and sits on the steep, northeast slope of Telephone Hill.

The commercial building, constructed in 1951 by long-time Juneau residents and brothers Elton and Allan Engstrom, housed the Alaska Public Works Department from 1951 to 1973.

In 1984, the insurance company offices of Corroon & Black/Dawson & Company occupy a major portion of the building. The two-story structure also contains other business offices and apartments.

The Engstrom Building, a two-story structure, has a one-story extension attached to its east facade. The main structure is 27' x35' with a floor area of 945 square feet. The one-story extension is 22 1 x41 1 , encompassing 902 square feet. The extension entry is on the north facade.

Five sets of double-hung sash windows with four windows to a set are placed symmetrically on this facade. The entrance door is multi-panel wood and reached by a short flight of concrete steps.The south facade has a wood door. Pre-1984 T-1-11 channel, plywood siding covers the east facade. The west facade fronts aparking lot located on the corner of Third and Dixon Streets. The one-story extension attached to the east facade has a flat roof.

Telephone Hill Historic Site and Structures Survey, 1984