Question: What one-time American Red Cross affiliate and African American medical researcher aided Dr. John Scudder with his Plasma for Britain program?

Context articles: John Scudder Sr.
John Scudder (physician)
American Red Cross Nursing Service
Charles R. Drew
Jarrett Barrios
American Red Cross Clubmobile Service
American Red Cross
American Red Cross Volunteer Life Saving Corps
American Red Cross Motor Corps
American Red Cross National Headquarters

Rev. Dr. John Scudder Sr. (September 3, 1793 – January 13, 1855), M.D., D.D., founded the first Western Medical Mission in Asia at Ceylon and later became the first American medical missionary in India.
 He began what amounted to more than 1,100 combined years of missionary service there by 42 members of four generations of the Scudder family of missionaries in India.
Dr. John Scudder (1900 – December 1976) was a medical doctor and blood transfusion specialist who developed the Plasma for Britain program during the early years of World War II.
 He recruited Dr. Charles Drew to help develop the organization and its processes to get the plasma supply project operational.
 Their work was estimated to have helped save the lives of thousands of Allied troops.
The American Red Cross Nursing Service was organized in 1909 by Jane Arminda Delano (1862-1919).
 A nurse and member of the American Red Cross, Delano organized the nursing service as the reserve of the Army Nurse Corps to be ready just before the entry of the United States into World War I.
 Key wartime decisions were made by Delano along with Mary Adelaide Nutting, president of the American Federation of Nurses, and Annie Warburton Goodrich, dean of the Army School of Nursing.
Charles Richard Drew (June 3, 1904 – April 1, 1950) was an American physician, surgeon, and medical researcher.
 He researched in the field of blood transfusions, developing improved techniques for blood storage, and applied his expert knowledge to developing large-scale blood banks early in World War II.
 This allowed medics to save thousands of lives of the Allied forces.
 The research and development aspect of his blood storage work is disputed.
 As the most prominent African American in the field, Drew protested against the practice of racial segregation in the donation of blood, as it lacked scientific foundation, and resigned his position with American Red Cross, which maintained the policy until 1950.
Jarrett Tomás Barrios (born October 16, 1968) is the chief executive officer of the American Red Cross Los Angeles Region, a former politician and activist.
 Prior to this, he served at the CEO of the American Red Cross of Massachusetts.
 Barrios served as a member of both the Massachusetts House of Representatives and the Massachusetts Senate and became the first Latino and first openly gay man elected to the Massachusetts Senate.
 He subsequently served as president of the Blue Cross and Blue Shield of Massachusetts Foundation and, later, of the Gay & Lesbian Alliance Against Defamation (GLAAD).
The American Red Cross Clubmobile Service was a mobile service club created during World War II to provide servicemen with food, entertainment and "a connection home."
 The Clubmobile was conceived by Harvey D. Gibson, a prominent New York banker and American Red Cross Commissioner to Great Britain, as a way to reach servicemen in airfields, camps and other theaters of war.
 All of the services provided by the Clubmobile were free, although some Clubmobiles began charging for food after 1942.
 The original Clubmobiles operated from late 1942 until 1946, traveling all throughout Great Britain and Europe.
 Women who volunteered for the Clubmobiles were popularly referred to as "donut dollies," since one of their biggest tasks was making doughnuts for the servicemen.
The American Red Cross (ARC), also known as the American National Red Cross, is a humanitarian organization that provides emergency assistance, disaster relief and education in the United States.
 It is the designated US affiliate of the International Federation of Red Cross and Red Crescent Societies.
The American Red Cross Volunteer Life Saving Corps (ARCVLSC) is a non-profit organization made up of volunteer lifeguards.
 It is a division of the American Red Cross, which provides volunteer lifeguards to Jacksonville beaches and internationally through Lifeguards Without Borders.
American Red Cross Motor Corps (also known as American Red Cross motor service) was founded in 1917 by the American Red Cross (ARC).
 The service was composed of women and it was developed to render supplementary aid to the US Army and Navy in transporting troops and supplies during World War I, and to assist other ARC workers in conducting their various relief activities.
 The diverse character of the work included canteen work, military hospitals, camps and cantonments, home service workers, outside aid, office detail, other ARC activities, and miscellaneous services, such as the 1918 flu pandemic.
The American Red Cross National Headquarters is a located at 430 17th Street NW in Washington, D.C. Built between 1915 and 1917, it serves both as a memorial to women who served in the American Civil War and as the headquarters building for the American Red Cross.
 It was declared a National Historic Landmark in 1965.