"he would distribute the devices to his patients himself"

The "devices" that Dr Copeland talks about are most likely condoms. By the 1930s, condoms were mass produced, although they were not universally available. Legal restrictions were gradually relaxing, but the Church's stance remained resolutely anti-contraceptives. During the Great Depression, the reusable rubber models grew in popularity, due to their cost effectiveness.

1930s condom packet
Public Domain1930s condom packet
1930s condom packet
Public Domain1930s condom packet