Yellow Triangle, an original 30 by 30 inch January 1975 oil painting by Las Vegas artist John Barrett Main — **Yellow Triangle** Original 30 × 30-inch geometric abstract painting by John Barrett Main, completed in January 1975.

Direct From the Artist

A Continuous Family History Since 1975

The Henning family commissioned this painting directly from John Barrett Main at the same time as its companion work, Yellow Cross with Brown Field. It was not acquired through an auction, resale marketplace or unknown third party.

The painting has remained in the same family collection since its acquisition, creating a clear ownership history extending from the artist to the present owner.

Artist John Barrett Main

Date January 1975

Medium Original Oil Painting

Dimensions 30 × 30 Inches

Acquisition Commissioned Directly

Collection Henning Family Collection

Offered For $4,650 Purchasing and delivery details available upon request.

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Evidence on the Artwork

Original Reverse Inscription

The reverse of the canvas bears the artist’s handwritten name, the date “1-75” and the descriptive wording “Earth Colors w/ Small Yellow Triangle.”

These markings provide important identifying evidence connecting the painting to John Barrett Main and documenting when the work was created.

The inscription is shown as it presently appears on the reverse of the canvas. Interested buyers may request additional high-resolution photographs and supporting research.

Reverse of Yellow Triangle showing its original John Barrett Main inscription and January 1975 date — Complete reverse with the original identifying inscription

Close-up of John Barrett Main's handwritten name, January 1975 date and Earth Colors with Small Yellow Triangle description — Artist’s handwritten identifying marks and date

Artwork Documentation

Color, Surface and Construction Details

These close-up and side-view photographs document the painting’s earth-toned palette, canvas texture, painted edges, construction and current vintage condition.

Close-up of the curved earth-tone forms and canvas texture in Yellow Triangle — Earth-tone composition and original canvas texture

Paint surface and intersecting geometric forms in the original 1975 Yellow Triangle painting — Painted surface and intersecting geometric forms

Detailed view of the small yellow triangle and adjoining colors in the John Barrett Main painting — The small yellow triangle and adjoining forms

Angled view showing the painted edge and canvas depth of Yellow Triangle — Painted edge and original canvas depth

Three-quarter view of Yellow Triangle showing its geometric composition and painted sides — Three-quarter presentation view

Side detail documenting the painted edge and construction of the Yellow Triangle canvas — Side profile and edge construction

Original Las Vegas Artwork

Acquire a Documented Work From 1975

Offered for $4,650. This original 30 × 30-inch painting includes documented family provenance. Contact ShopHenCo Books to request additional photographs, condition information, purchasing details or delivery options.

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