Henry Perrine Baldwin

The irrigation projects became so profitable that the Alexander and Baldwin partnership was able to buy out other planters and enlarge their holdings.

By 1877 Baldwin had the Hamakuapoko Mill built on the southwestern side of Maliko Gulch near the irrigated fields, 20°54′56″N 156°20′53″W.

The Haiku mill shut down in 1879.

The Paʻia Mill opened in 1880,

20°54′25″N 156°22′32″W

In 1881 the Kahului Railroad allowed the sugar to travel by train to the growing port of Kahului.

In 1882 Alexander moved to Oakland, California and enrolled his children in the schools there.

Baldwin and his family also visited California but returned in 1883 and he became manager of the Haiku plantation. He built another house near the former Haiku mill and started buying shares of the business.

Spreckels used his vast financial resources to bring German Engineer Hermann Schussler to build his own irrigation system from 1878 to 1880, forming the Hawaii Commercial and Sugar Company. Spreckels also controlled the sugar refinery in California used for most Hawaiian sugar. Eventually Spreckels would sell out in 1898 and Baldwin would become a partner, and merge Haiku and Paia sugar companies into it. Baldwin managed HC&S personally from 1902 to 1906.

In 1887 he traveled to England with brother-in-law Samuel Mills Damon to see the Golden Jubilee of Queen Victoria.

In 1888 he offered the foundation of the old Paliuli mill to his church, and a wooden frame building was built on the site where he lost his arm — his monument for answering his prayers. He also helped fund restoration of the Waineʻe Church of his father.

In 1888, Henry Baldwin and a few businessmen from Honolulu formed the Haleakala Ranch, consisting of 33,817 acres (13,685 ha) on the slopes of the dormant volcano Haleakalā. Piʻiholo Ranch is part of that acreage, now used for tourism.

Henry Baldwin hired Louis von Tempsky to manage Haleakala ranch in 1899, and Louis' daughter Armine von Tempski (1892–1943) wrote several novels and an autobiography about life on the Baldwin ranch.

In 1889 the McKinley Tariff act raised tariffs on sugar exported to the U.S. market, and its price dropped to two cents a pound. Baldwin took advantage of the lower land prices and built an irrigation project on Kauaʻi island called the Hanapepe ditch for the Hawaiian Sugar Company. He moved his family to Kauaʻi for a few months before moving back to Maui in 1893.

In 1894 a partnership with Alexander became agent to sell the sugar in California.

In 1900, the partnership became officially incorporated as Alexander & Baldwin (A&B). With offices in both Honolulu and San Francisco, it acted as an agent for other plantations as well. Eventually A&B would evolve into a holding company for many other ventures, including shipping line Matson Navigation Company.

In 1899 he supervised another irrigation project at Kihei.

In 1903 he built another house called Maluhia at a higher elevation near Olinda, Hawaii surrounded by fruit trees.

Keahua Ranch Company in 1909 became the Maui Pineapple Company.

In 1905, he became an owner of The Maui News. His descendants continued to own the paper until 2000.

He married Emily Whitney Alexander (1846–1943), sister of his business partner Samuel Alexander, on April 5, 1870.

His sister Abigail Charlette Baldwin had married Samuel's brother William DeWitt Alexander (1847–1912) in 1861.

Their first son Henry Alexander Baldwin (1871–1946), known as "Harry", became manager of the Haiku Sugar Company in 1921, which was merged with other plantations to become the Maui Agricultural Company.

Harry was very active in politics, including serving as delegate to the United States House of Representatives from the Territory of Hawaii.

Son William Dwight Baldwin was born October 25, 1873, graduated from Yale in 1897, and then Johns Hopkins Medical School in 1901. He returned in 1905 to practice medicine in Honolulu until 1914 when he became a rancher on Maui. He died October 30, 1943.

Arthur Douglas Baldwin was born April 8, 1876, graduated from Yale and then Harvard Law School 1898–1891 He moved to Cleveland, Ohio and practised law in his firm Garfield McGregor & Baldwin. His law partner James Rudolph Garfield was son of President James A. Garfield. He married Reba Louise Williams in 1902 and had five children. He wrote a biography of his father.

He became a lieutenant of field artillery in World War I and died in 1954.

Son Frank Fowler Baldwin was born March 30, 1878, attended Yale but left in 1898. He started work as a field worker and eventually became President of Kahului Railroad in 1910, and of the Hawaiian Commercial Company (HC&S) when Henry Perrine died.

In 1948 Frank combined HC&S with Maui Agricultural Company for a combined 25,454 acres (10,301 ha). He died February 6, 1960.

Daughters Maud Mansfield (Baldwin) Cooke (1872–1961) and Charlotte (Baldwin) Rice (1884–1938) married descendants of other missionaries, Joseph Platt Cooke (1870–1918), and Harold Waterhouse Rice, who also were in the sugar business. Cooke was grandson of Amos Starr Cooke and nephew of businessman Samuel Gardner Wilder.

Youngest son Samuel Alexander Baldwin was born August 30, 1885. He attended Punahou School, Oakland High School in California, and Yale in 1908. He married Katherine Smith in Honolulu, May 10, 1909. He became a champion polo player and managed Haleakala Ranch when von Tempsky retired.

Samuel died July 21, 1950.

In 1910 the Baldwins founded the Fred Baldwin memorial foundation in honor of their son Fred Chambers Baldwin (1881–1905) who died October 11, 1905, in New York City. From 1910 through World War II it supported an elderly housing facility. Since then it has made grants to the Maui community.

Henry Perrine Baldwin had an operation for appendicitis in January 1909 and traveled to California in the summer of 1911. He died a few days after returning on July 8, 1911.

David Thomas Fleming (1881–1955) was manager of Baldwin's Honolua Ranch where he planted pineapple in 1912. Fleming converted the cattle ranch to a pineapple plantation. This was the beginning of Maui Land & Pineapple Company, an industry that continued until 2009.

In 1913 the Old Maui High School was built on the Hamakuapoko plantation land.

Henry Perrine Baldwin High School was named for him in Wailuku, Hawaii in 1934.

The former superintendent's residence of a Hawaiian Commercial & Sugar Company sugar mill in Puʻunēnē is now the Alexander & Baldwin Sugar Museum. H.A. Baldwin Beach Park is located on the north shore of Maui between Spreckelsville and Paia.

In 1916 another new Makawao Union Church was built of concrete with stone veneer and is called the "Henry Perrine Baldwin Memorial Church". Many Baldwin family members are buried in the Makawao Cemetery near him.

William Hyde Rice (son of William Harrison Rice and father of Harold W. Rice who married Charlotte Baldwin) and Henry Alexander Baldwin were among the notable speakers.

After the 1887 Constitution of the Kingdom of Hawaii raised the property-owning requirements of voters, Henry Perrine Baldwin was elected to the Kingdom House of Nobles from 1887 to 1892, and the Senate of the Republic of Hawaii and Territory of Hawaii 1895–1904.

He was a member of the foreign affairs committee, and inherited his father's concern for public health, using his own money to fund better homes in the Kalaupapa Leprosy Settlement.

He introduced a bill proposing to outlaw employment of children under 13, but it was defeated.

He was a member of the controlling Reform Party, which evolved into the Hawaii Republican Party. He generally opposed the ruling King Kalākaua, but never expressed support for the overthrow of the Kingdom of Hawaii in 1893. He gave the speech nominating Prince Jonah Kūhiō Kalanianaʻole for Congressional delegate in 1902.