1901 Charles R. Walgreen Sr. purchased the Chicago drugstore where he had worked as a pharmacist and that started the Walgreen chain. His energy and enthusiasm soon led to new ideas and ambitious expansion. For example, he manufactured his own line of drug products to ensure high quality and low prices.
1909 The second Walgreen store opened.
1916 Nine stores incorporated as Walgreen Co.
1922 Walgreens invented the malted milkshake. Customers stood three and four deep around the soda fountain to buy the "double-rich chocolate malted milk."
1926 The 100th store opened in Chicago.
1927 Walgreen Co. stock went public.
1933 Walgreens helped celebrate Chicago's World Fair. The company opened four stores on the Century of Progress fairgrounds. These stores experimented with advanced fixture design, new lighting techniques and colors ideas that helped modernize drugstore layout and design.
1939 Charles Walgreen Sr. died and Charles Walgreen Jr. became the company's president.
1943 The company opened a nonprofit 6,000-foot drugstore in the Pentagon. All the profits from the store went to the Pentagon Post Restaurant Council, which supervised food service in the complex. The store operated into the 1980s.
1946 Walgreens acquired its first foreign property when the company bought the Mexican retailer Sanborn's. In 1984, the company sold Sanborn's.
1950 Walgreens began to build self-service instead of clerk service stores in the Midwest. By 1953, Walgreens was the largest self-service retailer in the country.
1960 Walgreens entered the Puerto Rico market.
Walgreens filled its 100 millionth prescription, far more than any drug chain at that time.
1968 Walgreens became the first major drug chain to put its prescriptions into child-resistant containers, long before it was required by law.
1969 Charles Walgreen III became the company's president.
1975 Walgreens reached $1 billion in sales.
1981 The first Intercom computers were installed in five Walgreen pharmacies in Des Moines, Iowa. This was the initial step toward making Walgreens the first drugstore chain to connect all its pharmacy departments via satellite.
1982 Next-day photofinishing became available chainwide.
1984 Walgreens opened its 1,000th store, at 1200 N. Dearborn in Chicago.
1991 In November, the chain completed installation of point-of-sale scanning to speed checkouts.
1992 Walgreens opened its first drugstore with a drive-thru pharmacy.
1994 The 2,000th store opened in Cleveland.
1997 Intercom Plus, Walgreens advanced computer system, completed rollout to all stores. Intercom Plus speeds the prescription-filling process, permits better patient counseling and is the leading pharmacy system in the industry.
1999 Walgreens.com, a comprehensive online pharmacy, was launched offering customers a convenient and secure way to take care of many pharmaceutical and healthcare needs online. In addition, the site provides Mayo Clinic Health Information, a trusted source in health and wellness information.
Charles Walgreen III retired. L. Daniel Jorndt is named chairman.
2000 Walgreens reached the 3,000-store mark when its location at Halsted and Monroe in Chicago opened.
2001 Walgreens celebrated its centennial in June and rang the opening bell at the New York Stock Exchange.
2002 Walgreens became the first drugstore chain to offer prescription labels in multiple languages chainwide. Today, labels can be printed in one of 14 languages Arabic, Chinese, French, German, Italian, Japanese, Korean, Polish, Portuguese, Russian, Spanish, Tagalog, Vietnamese and English.
2003 Walgreens reached the 4,000-store mark when its location at Coldwater Canyon Avenue and Magnolia Boulevard in Van Nuys, Calif., opened in March. L. Daniel Jorndt retired and David Bernauer was named chairman.
2005 Walgreens opened its 5,000th store in Richmond, Va., in October.
2006 In July, president Jeffrey A. Rein was named CEO while former CEO and chairman David W. Bernauer continued as chairman. Also in July, Walgreens acquired Happy Harry’s drugstore chain, adding 76 stores, primarily in Delaware. In the fall, Walgreens began offering in-store health clinics, called Health Corner Clinics, with nurse practitioners treating walk-in patients for common ailments. During 2006, clinics opened in St. Louis, Kansas City, Chicago and Atlanta."
2007 Walgreens acquired Take Care Health Systems and with the acquisition, it expects to have more than 400 clinics by the end of 2008. Also in 2007, chairman David W. Bernauer retired and Jeffrey A. Rein became chairman and CEO. Gregory D. Wasson was named president and COO. In the summer of 2007, Walgreens acquired
Option Care, a network of more than 100 pharmacies (including more than 60 company-owned) in 34 states, providing a full spectrum of specialty pharmacy and
home infusion services. In the fall of 2007, Walgreens opened its first store in
Hawaii in Honolulu and celebrated the opening of its 6,000th store in New Orleans.