This image shows two common modes of transporting large logs from the forest to the mill, as exhibited outdoors as part of the Logging Museum at Hartwick Pines State Park.  In the foreground is a sled, where the logs would be piled up on the main body, and a pair of draft animals used to pull the sled.

In the background is a lumber wheel. The logs were attached below the wheel instead of on the axle, and were suspended above the ground to minimize drag as the draft animals pulled the loaded wheel along.
There are several examples of such equipment on outdoor display. This image likely dates from the 1930s.

This continues upward on the Monarch Tree in Hartwick Pines State Park, showing the middle reaches and the underside of the living crown of the tree.

This upper part of the tree with living branches, called the crown, was broken off in a storm in 1992 and the tree died four years later. This image shows what remains of the tree. This image likely dates from the 1930s.

This tree, called the Monarch White Pine, was the tallest and largest of the old growth pines that formed the core of the Hartwick Pines State Park. This image shows the size of the base of the tree, where measurements of circumference are taken.

The sign states:
The Monarch White Pine, Height 150 feet, Diameter 51inches, Circumference 13 feet, 8 inches, Approximately 6000 board feet in this tree.
–The tree was damaged in a storm in 1992 and died 4 years later. This image likely dates from the 1930s.

Shown here is a slightly less well developed path through the pines, with a greater number of newer growth trees visible along the way.

The Hartwick Pines State Park totals 9,672 acres, but only 49 of the original 85 acres of old growth forest remains. The park was established by Karen Hartwick with a donation of the land to the state in memory of her late husband, Major Edward Hartwick, who died in World War I.
This image likely dates from the 1930s.

This is a small section of a typical walking path through the Hartwick Pines State Park.

It is likely this path leads through the old growth forest section, with trees aged over 300 years. A large portion of the trees were destroyed in a storm on Veteran’s Day, 1940, but over 49 acres of old growth still stand.
This image likely dates from the 1930s.

This rustic chapel is made from the same pine wood as the trees that surround it. It is located in Hartwick Pines State Park.

This is still a popular location for weddings. The park was established in the 1920s, and this image likely dates from the 1930s.
Like the rest of this series, there is no description on the back of the card.

This quaint rural view is in fact a view of the main club house and links for the once named Leelanau Golf Club. There is another, larger establishment by that name now, and this course has been renamed the Northport Point Golf Club, still with 9 holes.
This course was constructed in 1913, and is both private and unrated as to golf standards. The black smearing on the bottom of the picture is original, probably from when the picture was re-captioned.
The caption states:
Leelanau Golf Club, Northport Point, Mich 9
This postcard was used, and is postmarked June 1939.

This image is of the same dock as the previous one. Close comparison of the building in the background of each picture shows them to be the same. The previous photo was taken a few feet to the right on the dock itself. The presence of this fishing tug illustrates why the dock is so popular with the gulls.
Many more frames for drying nets are visible behind the boat. It is called a tug, which may be another term for trawler, as the booms typical of seiners are not present.
The caption states:
Typical Fishing Tug Northport, Mich. 135
This card likely dates from the 1930s.