In front of this New Hampshire country home is a two-crossarm, 6-pin telephone line.

This kind of construction was among the first Ma Bell had here in New England. Sidepins used otherwise for fewer wires.

These early lines had iron wire along with NET&T CD 104 insulators as well as other early styles.

Most of the 6-pin crossarms as shown were held in place via two lag screws into the pole; sometimes supported by crossarm braces (as shown).

By the teens, Ma Bell pole replacements employed 10-pin crossarms. I believe these were creosoted from when they started with the ten-pinners.

Additionally, taller poles supporting electric service to rural locales included replacement 10-pin arms as standard. These had either 28 or 30-inch crossarm braces mounted from outside the arm, with one bolt hole for the crossarm-to-pole mount.

A lot of the latter lasted well into the 1960s until replaced by covered, twisted-pair cable.