A vein from the leg is removed and grafted to the coronary artery to bypass a blockage. Coronary artery bypass surgery during mobilization (freeing) of the right coronary artery from its surrounding tissue, adipose tissue (yellow). The tube visible at the bottom is the aortic cannula (returns blood from the HLM).
The average yearly income in 1930 was $1,368. With a 40 hour work  week that is an average of about 65 cents per hour.1368 per annum. Keep in mind two things: there were almost no taxes back then, and unimployment was high, so this is an average of the mostly white collar workforce.
between 1970 and 1980 the real average annual wage of men increased by 14 % from $ 26200 in 1970 to $ 29900 in 1980 and that of women by 15 % from $ 13700 to $ 15700 although both men and women gained about equally the overall increase in real wages was as noted less than 9 %hus between 1940 and 1950 the average annual wage more than doubled to $ 1900 it tripled in the next two decades to $ 5700 in 1970 and more than quadrupled in the next two to about $ 24300 in 1990 both men and women experienced such increases in their average annual wages during this period table 1